I don't really follow your reasoning, we probably have quite different outlooks on the subject.
No he doesn't come from a rich background. That's the point. A lot of people that end of rich come from a background where vanity is very important. They then have to spend a large part of their life trying to achieve that goal. That's why I don't care about "captains of industry". I don't expect any better, they've already "sold their soul".
I don't necessarily dislike people like that, because it can be very hard to opt-out of that life. The classic case is where you father works to much and neglects your mother, which self medicates a bit to much and in turn neglects you. So the only thing you know is trying to be your father to rationalize your sense of abandonment.
When people who doesn't have that background become rich and can do whatever they want, but instead opts-in to those values I think it's sad. Maybe he has personal problems of his own, or he just don't care anymore or whatever, I'm not going to be first in line to celebrate the guy. Because buying the most expensive house in the most vain place in the world is just not something I value.
Minecraft is still pretty cool though.