[nostrademons]

That's sorta true, but only applies to specific technical & domain skills needed by your industry. There are a lot of "soft" skills needed to found a successful company, and entrepreneurs start in wildly different places for this.

DropBox was Drew's second company, and I remember him saying that his experience with the first and the intervening jobs was what made him so determined to do it "right" this time and have the persistence to stick it out. Facebook was Zuckerburg's third company; he'd already had acquisition offers from Microsoft for his second (Synapse Media Player). Apple was Steve & Steve's second company together; the first was selling blue-boxes. Google was started by first-time founders, but they were first-time founders who had the background and upbringing to have confidence in themselves and believe they could change the world.