We're not talking about ANY wealth of his own. He's a kept man, always has been. He got nothing from his first wife, had no money of his own, had to borrow friends' apartments because he couldn't afford to pay the rent, was said not to have a bed of his own when he married Mama T.
Even in his early years, though his family had the name and connections to put them in the world of the wealthy, they had no money either.
One of his aunts or great-aunts paid his way through his expensive schools, and he was said not to have the wherewithal to even have a proper wardrobe for the circles he traveled in.
Now of course, his wardrobe is tended to by his valet, and he looks down on those whose clothes don't measure up to his.
Yes but he's still superior because he never dirtied his hands by doing any kind of work.