Except those companies, or the people who founded them, also had early failures. For instance, Zuckerberg's original site was more akin to "Hot or Not" than Facebook and got shut down by Harvard. Gates certainly had failures, as did Larry and Sergey. Just because the company they founded was successful from inception doesn't mean it wasn't a struggle to figure out how to get there. It would be wild to me to assume that there are people out there, walking among us, who have never failed.