There was a study about this. They gave some people an advantage in a game, like more starter money and more money when passing start in monopoly. Of course they won and if asked why, it was because they were just better than the other players. The same psychology plays out with CEO's. They had an advantage of rich parents and/or got lucky, but will always say it's because they are just better than the rest. And that plays out in wider society in a nice circular reasoning.

They are successful because they are better than te rest. They are better because they have money. They have money because they are successful.

It gets lapped up by the ones believing in individual freedom and making your own fortune, because current society, especially in the USA, has been one big experiment in extreme individualism. In practice it mostly turned out to be, partially by design, the old aristocracy under a new veneer.