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Monopolistic Competition and Oligopoly
1.
Monopolistic Competition and
Oligopoly Prepared by: Chapter 14 Fernando & Yvonn Quijano © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
2.
Chapter Outline Monopolistic
Competition 14 and Oligopoly Monopolistic Competition Product Differentiation, Advertising, and Social Welfare Price and Output Determination in Monopolistic Competition Economic Efficiency and Resource Allocation Oligopoly Oligopoly Models Game Theory Repeated Games A Game with Many Players: Collective Action Can Be Blocked by a Prisoners’ Dilemma Oligopoly and Economic Performance Industrial Concentration and Technological Change The Role of Government Regulation of Mergers A Proper Role? C H 2 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
3.
MONOPOLISTIC COMPETITION AND
OLIGOPOLY FIGURE 14.1 Characteristics of Different Market Organizations Although not every industry fits neatly into one of these categories, the categories do provide a useful and convenient framework for thinking about industry structure and behavior. C H 3 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
4.
MONOPOLISTIC COMPETITION monopolistic
competition A common form of industry (market) structure in the United States, characterized by a large number of firms, none of which can influence market price by virtue of size alone. Some degree of market power is achieved by firms producing differentiated products. New firms can enter and established firms can exit such an industry with ease. C H 4 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
5.
MONOPOLISTIC COMPETITION TABLE
14.1 Percentage of Value of Shipments Accounted for by the Largest Firms in Selected Industries, 1997 INDUSTRY DESIGNATION FOUR LARGEST FIRMS EIGHT LARGEST FIRMS TWENTY LARGEST FIRMS NUMBER OF FIRMS Travel trailers and campers 26 36 50 761 Dolls 31 51 66 239 Wood office furniture 34 42 55 639 Book printing 32 45 59 890 Curtains and draperies 26.5 36.3 50.1 2012 Fresh or frozen seafood 13.6 22.9 42.2 586 Women’s dresses 14.2 23.7 39.4 747 Miscellaneous plastic products 5 8 14 7522 Source: U.S. Department of Commerce, Bureau of the Census, 1997 Census of Manufacturers, Concentration Ratios in Manufacturing. Subject Series EC92m315, June, 2001. Firms in a monopolistically competitive industry are small relative to the total market. New firms can enter the industry in pursuit of profit, and relatively good substitutes for the firms’ products are available. Firms in monopolistically competitive industries try to achieve a degree of market power by differentiating their products—by producing something new, different, or better, or by creating a unique identity in the minds of consumers. C H 5 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
6.
MONOPOLISTIC COMPETITION PRODUCT
DIFFERENTIATION, ADVERTISING, AND SOCIAL WELFARE product differentiation A strategy that firms use to achieve market power. Accomplished by producing products that have distinct positive identities in consumers’ minds. C H 6 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
7.
MONOPOLISTIC COMPETITION TABLE
14.2 Total Advertising Expenditures in 2003 DOLLARS (BILLIONS) Newspapers 45.4 Television 62.2 Direct mail 49.1 Yellow pages 13.9 Internet 5.6 Radio 19.5 Magazines 11.8 Source: McCann Erickson, Inc., Reported in U.S. Bureau of the Census, Statistical Abstract of the United States, 2002, Table 1253. C H 7 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
8.
MONOPOLISTIC COMPETITION TABLE
14.3 Magazine Advertising Revenues by Category, 2003 DOLLARS (MILLIONS) Automotive 2,088 Technology Telecommunications Computers and software 243 729 Home furnishings and supplies 1,554 Toiletries and cosmetics 1,699 Apparel and accessories 1,513 Financial, insurance and real estate 896 Food and food products 1,391 Drugs and remedies 1,663 Retail stores 986 Beer wine and liquor 394 Sporting goods 253 Source: Publishers Information Bureau, Statistical Abstract of the United States, 2002, pg. 772 C H 8 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
9.
MONOPOLISTIC COMPETITION The
Case for Product Differentiation and Advertising Restaurants and rock bands are good examples of monopolistic competitors that face intense competition. The advocates of spirited competition believe that differentiated products and advertising give the market system its vitality and are the basis of its power. They are the only ways to begin to satisfy the enormous range of tastes and preferences in a modern economy. Product differentiation also helps to ensure high quality and efficient production, and advertising provides consumers with the valuable information on product availability, quality, and price that they need to make efficient choices in the marketplace. C H 9 of 38 © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
10.
HC 10 of
MONOPOLISTIC COMPETITION The Case Against Product Differentiation and Advertising Product differentiation and advertising waste society’s scarce resources, argue critics. They say enormous sums of money are spent to create minute, meaningless differences among products. The bottom line, critics of product differentiation and advertising argue, is waste and inefficiency. Enormous sums are spent to create minute, meaningless, and possibly nonexistent differences among products. Advertising raises the cost of products and frequently contains very little information. Often, it is merely an annoyance. Product differentiation and advertising have turned the system upside down: People exist to satisfy the needs of the economy, not vice versa. Advertising can lead to unproductive warfare and may serve as a barrier to entry, thus reducing real competition. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
11.
HC 11 of
MONOPOLISTIC COMPETITION No Right Answer There are strong arguments on both sides of the advertising debate, and even the empirical evidence yields to conflicting conclusions. Some studies show that advertising leads to concentration and positive profits; others, that advertising improves the functioning of the market. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
12.
HC 12 of
MONOPOLISTIC COMPETITION PRICE AND OUTPUT DETERMINATION IN MONOPOLISTIC COMPETITION Product Differentiation and Demand Elasticity FIGURE 14.2 Product Differentiation Reduces the Elasticity of Demand Facing a Firm Although the demand curve faced by a monopolistic competitor is likely to be less elastic than the demand curve faced by a perfectly competitive firm, it is likely to be more elastic than the demand curve faced by a monopoly. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
13.
HC 13 of
MONOPOLISTIC COMPETITION Price/Output Determination in the Short Run FIGURE 14.3 Monopolistic Competition in the Short Run To maximize profit, the monopolistically competitive firm will increase production until the marginal revenue from increasing output and selling it no longer exceeds the marginal cost of producing it. This occurs at the point at which marginal revenue equals marginal cost: MR = MC. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
14.
HC 14 of
MONOPOLISTIC COMPETITION Price/Output Determination in the Long Run FIGURE 14.4 Monopolistically Competitive Firm at Long-Run Equilibrium The firm’s demand curve must end up tangent to its average total cost curve for profits to equal zero. This is the condition for long-run equilibrium in a monopolistically competitive industry. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
15.
HC 15 of
MONOPOLISTIC COMPETITION ECONOMIC EFFICIENCY AND RESOURCE ALLOCATION Because entry is easy and economic profits are eliminated in the long run, we might conclude that the result of monopolistic competition is efficient. There are two problems, however. First, once a firm achieves any degree of market power by differentiating its product (as is the case in monopolistic competition), its profit-maximizing strategy is to hold down production and charge a price above marginal cost. Second, the final equilibrium in a monopolistically competitive firm is necessarily to the left of the low point on its average total cost curve. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
16.
HC 16 of
OLIGOPOLY oligopoly A form of industry (market) structure characterized by a few dominant firms. Products may be homogenous or differentiated. The behavior of any one firm in an oligopoly depends to a great extent on the behavior of others. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
17.
HC 17 of
OLIGOPOLY TABLE 14.4 Percentage of Value of Shipments Accounted for by the Largest Firms in High-Concentration Industries, 1997 INDUSTRY DESIGNATION FOUR LARGEST FIRMS EIGHT LARGEST FIRMS NUMBER © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair OF FIRMS Cellulosic man-made fiber 100 4 Primary copper 95 99 11 Household laundry equipment 90 99 10 Cigarettes 99 100 9 Malt beverages (beer) 90 95 494 Electric lamp bulbs 89 94 54 Cereal breakfast foods 83 94 48 Motor vehicles 83 92 325 Small arms ammunition 89 94 107 Household refrigerators and freezers 82 97 21 Source: U.S. Department of Commerce, Bureau of the Census, 1997 Census of Manufacturers, Concentration Ratios in Manufacturing, Subject Series 2001.
18.
HC Because many
different types of oligopolies exist, a number of different oligopoly models have been developed. All kinds of oligopoly have one thing in common: The behavior of any given oligopolistic firm depends on the behavior of the other firms in the industry comprising the oligopoly. 18 of OLIGOPOLY OLIGOPOLY MODELS © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
19.
HC 19 of
OLIGOPOLY The Collusion Model The colluding oligopoly will face market demand and produce only up to the point at which marginal revenue and marginal cost are equal (MR = MC), and price will be set above marginal cost. cartel A group of firms that gets together and makes joint price and output decisions to maximize joint profits. tacit collusion Collusion occurs when price- and quantity-fixing agreements among producers are explicit. Tacit collusion occurs when such agreements are implicit. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
20.
HC 20 of
OLIGOPOLY The Cournot Model Cournot model A model of a two-firm industry (duopoly) in which a series of output adjustment decisions leads to a final level of output between the output that would prevail if the market were organized competitively and the output that would be set by a monopoly. The Cournot model of oligopoly results in a quantity of output somewhere between output that would prevail if the market were perfectly competitive and output that would be set by a monopoly. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
21.
HC 21 of
OLIGOPOLY The Kinked Demand Curve Model kinked demand curve model A model of oligopoly in which the demand curve facing each individual firm has a “kink” in it. The kink results from the assumption that competitor firms will follow if a single firm cuts price but will not follow if a single firm raises price. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
22.
HC 22 of
OLIGOPOLY FIGURE 14.5 A Kinked Demand Curve Oligopoly Model © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
23.
HC price leadership
A form of oligopoly in which one dominant firm sets prices and all the smaller firms in the industry follow its pricing policy. As in the other oligopoly models, an oligopoly with a dominant price leader will produce a level of output between the output that would prevail under perfect competition and the output that a monopolist would choose in the same industry. It will also set a price between the monopoly price and the perfectly competitive price. Some competition is usually more efficient than none at all. 23 of OLIGOPOLY The Price-Leadership Model © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
24.
HC 24 of
OLIGOPOLY GAME THEORY game theory Analyzes oligopolistic behavior as a complex series of strategic moves and reactive countermoves among rival firms. In game theory, firms are assumed to anticipate rival reactions. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
25.
HC 25 of
OLIGOPOLY FIGURE 14.6 Payoff Matrix for Advertising Game © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
26.
HC 26 of
OLIGOPOLY dominant strategy In game theory, a strategy that is best no matter what the opposition does. prisoners’ dilemma A game in which the players are prevented from cooperating and in which each has a dominant strategy that leaves them both worse off than if they could cooperate. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
27.
HC 27 of
OLIGOPOLY FIGURE 14.7 The Prisoners’ Dilemma © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
28.
HC 28 of
OLIGOPOLY FIGURE 14.8 Payoff Matrixes for Left/Right–Top/Bottom Strategies © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
29.
HC 29 of
OLIGOPOLY Nash equilibrium In game theory, the result of all players’ playing their best strategy given what their competitors are doing. maximin strategy In game theory, a strategy chosen to maximize the minimum gain that can be earned. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
30.
HC 30 of
OLIGOPOLY REPEATED GAMES tit-for-tat strategy A company’s strategy that lets a competitor know the company will follow the competitor’s lead. FIGURE 14.9 Payoff Matrix for Airline Game © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
31.
HC 31 of
OLIGOPOLY A GAME WITH MANY PLAYERS: COLLECTIVE ACTION CAN BE BLOCKED BY A PRISONERS’ DILEMMA Contestable Markets perfectly contestable market A market in which entry and exit are costless. In contestable markets, even large oligopolistic firms end up behaving like perfectly competitive firms. Prices are pushed to long-run average cost by competition, and positive profits do not persist. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 32 of
OLIGOPOLY Review Oligopoly is a market structure that is consistent with a variety of behaviors. The only necessary condition of oligopoly is that firms are large enough to have some control over price. Oligopolies are concentrated industries. At one extreme is the cartel, in which a few firms get together and jointly maximize profits—in essence, acting as a monopolist. At the other extreme, the firms within the oligopoly vigorously compete for small, contestable markets by moving capital quickly in response to observed profits. In between are a number of alternative models, all of which stress the interdependence of oligopolistic firms. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 33 of
OLIGOPOLY OLIGOPOLY AND ECONOMIC PERFORMANCE Oligopolistic, or concentrated, industries are likely to be inefficient for several reasons. First, profit-maximizing oligopolists are likely to price above marginal cost. When price is above marginal cost, there is underproduction from society’s point of view—in other words, society could get more for less, but it does not. Second, strategic behavior can lead to outcomes that are not in society’s best interest. Specifically, strategically competitive firms can force themselves into deadlocks that waste resources. Finally, to the extent that oligopolies differentiate their products and advertise, there is the promise of new and exciting products. At the same time, however, there remains a real danger of waste and inefficiency. INDUSTRIAL CONCENTRATION AND TECHNOLOGICAL CHANGE One of the major sources of economic growth and progress throughout history has been technological advance. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 34 of
THE ROLE OF GOVERNMENT REGULATION OF MERGERS Celler-Kefauver Act (1950) Extended the government’s authority to ban vertical and conglomerate mergers. Herfindahl-Hirschman Index (HHI) A mathematical calculation that uses market share figures to determine whether or not a proposed merger will be challenged by the government. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
35.
HC Industry A
50 50 - - 502 + 502 = 5,000 Industry B 80 10 10 - 802 + 102 + 102 = 6,600 Industry C 25 25 25 25 252 + 252 + 252 + 252 = 2,500 Industry D 40 20 20 20 402 + 202 + 202 + 202 = 2,800 If the Herfindahl-Hirschman Index is less than 1,000, the industry is considered unconcentrated, and any proposed merger will go unchallenged by the Justice Department. If the index is between 1,000 and 1,800, the department will challenge any merger that would increase the index by over 100 points. Herfindahl indexes above 1,800 mean that the industry is considered concentrated already, and the Justice Department will challenge any merger that pushes the index up more than 50 points. 35 of THE ROLE OF GOVERNMENT TABLE 14.5 Calculation of a Simple Herfindahl-Hirschman Index for Four Hypothetical Industries, Each with No More Than Four Firms PERCENTAGE SHARE OF: HERFINDAHL-HIRSCHMAN FIRM 1 FIRM 2 FIRM 3 FIRM 4 INDEX © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 36 of
THE ROLE OF GOVERNMENT FIGURE 14.10 Department of Justice Merger Guidelines (revised 1984) © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 37 of
THE ROLE OF GOVERNMENT A PROPER ROLE? Certainly there is much to guard against in the behavior of large, concentrated industries. Barriers to entry, large size, and product differentiation all lead to market power and to potential inefficiency. Barriers to entry and collusive behavior stop the market from working toward an efficient allocation of resources. © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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HC 38 of
REVIEW TERMS AND CONCEPTS cartel Celler-Kefauver Act Cournot model dominant strategy game theory Herfindahl-Hirschman Index (HHI) kinked demand curve model maximin strategy monopolistic competition Nash equilibrium oligopoly perfectly contestable market price-leadership model prisoners’ dilemma product differentiation tacit collusion tit-for-tat strategy © 2007 Prentice Hall Business Publishing Principles of Economics 8e by Case and Fair
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