@Natsu, my point of contention is the very liberal definition of "self-made" and "made their money themselves". If you give every reader on HN a trust fund, and a few start successful companies, would these individuals be considered "self-made"?
I don't think so. Self made means start with zero net worth. That means no trust funds, no loans at 0% from parents with infinite payback periods, and no parent board members making absurdly lucrative deals that you'd never get otherwise. Just money you've made from your own labor, and loans you've received without nepotism. You'd be surprised how few entrepreneurs fall under this category.
If you don't restrict your definition in this way, then every rich person is self made, because the interest accruing in their trust fund happened during their lifetimes.