Investing in yourself is only worth it if you are better than average. People who aren't just waste time and money trying. But if you are better than average then investing in yourself is huge. That is essentially the only reason investing in a start-up would be better than just investing in someone else's start-up, you have to bet that you are better than the other people. And then if you keep reinvesting in yourself and you are consistently better than the CEO's of big companies then you become a billionaire, but of course most people don't generate those returns when you invest in them.
