> ...how many developers want to run their own large companies.

This sounds like an unremarkable subset of {vaguely dissatisfied lower-level workers who dream of a new job with far more power, fame, money, and/or interesting stuff}.

Similar are the people who read novels (at least occasionally), and have dreams of becoming a famous author. In my experience, ~0% of them are actually willing to sit down and try to write a 3-page story.