[bbctol]

Would you? You'd expect a bell curve; a small number of complete failures of entrepreneurs, lots of moderate but eventually failed attempts, lots of moderate but somewhat successful businessmen, and a couple of repeatedly successful ones. You got three. And all that's compounded by the way that success in one business, even if it was purely by luck, drastically increases the likelihood of success in another simply by giving you more capital. How successful has Elon Musk been? He started one reasonably successful company, then got in early at a very successful one, and has been using the capital from those ventures to fund interesting projects--but as cool as Tesla and Spacex are, I wouldn't call them wins yet.

In the long run, luck and genius are probably both necessary but not sufficient; I have no doubt that Zuckerberg's a very smart guy, I just think there are many, many people just as smart who aren't billionaires.