I don't think it's actually a unique form of hubris. This is a common discussion point in the politics of class. The wealthy quickly come to convince themselves

I don't think it's actually a unique form of hubris. This is a common discussion point in the politics of class. The wealthy quickly come to convince themselves of their own greatness & deservedness. Elements of luck, failures, and aid from others are all removed from the personal narrative. You wind up with a tautology; I made it because I am great, and because I am standing here, I must be great. It's hard & uncomfortable to think that you are just as lucky as you are good, and that others equally deserving (but less lucky) have nothing.