Mostly virtue signaling. They will set their kids up nicely, evading taxes as much as possible. Spend all the money they want. And then if they have more than that let other people spend it that they control. If they didn't, it would just be some money manager controlling it for them.

It would be hilarious if anyone just cut a check to every American for their share of his net worth, though. I imagine they would be popular even if it's like $4 a person.