I am not talking about "getting huge" at all, because I don't believe there is enough space in the market for 300+ (number of YC investments so far) huge (Google/Apple/Facebook/Microsoft) companies. I am, however, talking about non-trivial exits, ones that definitely put a founder in the "success" bin. Let's say, 10+ million in 4 years. I don't think it's possible to get to that point "on the side".
$10 million, minus the VC investment, split each among 2 or 3 founders. That ends up being what, $2-3 million in 4 years? I personally know several people who make more than that off of one iPhone app on the side. Apple's paid out billions to app developers.
Again, look at the numbers: what percent of YC investments have exited at $10 million+ in 4 years? Again, much closer to 10% than 100%. This is in a thread where pg implies that the chances of a big success are 2/3 or higher for some people. Empirical evidence proves that top investors are not right anywhere near the probability suggested.
