Bezos has taken to recently calling his immense wealth, his "Amazon lottery winnings." Which gives you an indication that he is fully aware of the role good luck has played in his life. I'm sure it's also meant to disarm or preempt criticism to an extent, Warren Buffet has done the same thing the entire time he has been famous & wealthy (using various explanatory concepts such as "the ovarian lottery," and joking about how he'd be dinosaur lunch in a different time given how a vicious carnivore might respond to his capital allocation skills). To the extent that Bezos's wealth is particularly wildly outsized, I'm sure - based on what he has said - that he recognizes it as being well beyond just the result of hard work and intelligence (both of which he usually gets credit for).