Zappos uses Holacracy with elected team representatives instead of team leads. Netflix says "Hard work is not relevant" and discourages process adherence. Teams at Facebook have every freedom to do whatever they want as long as they have "impact" with their work. Things like management by objectives, strategic goals, matrix or line organisations are discarded.
Why are they doing that? What does that mean for your startup when it reaches the magic upper limit of "it just works" at 35-50 people? Is there a blueprint for a better way? And if you already ended up in a line organisation with management by objectives etc, what would be the benefit of change?