I hear a lot about the role of "family wealth", but I never actually hear about mechanism, how exactly it helps. If you're a legacy of a wealthy family, and thanks to that, get into Harvard, then sure, that's a real leg up, but it doesn't explain why some Harvard graduates become billionaires, while overwhelming majority do not. Similarly, if your family is rich enough to invest $1M in your startup, that's surely a huge advantage over regular people, but given how easy it is for non-scions to get $1M in investment funding (and it's really easy), I can scarcely believe that "family wealth" is really such a huge causal factor.