Exactly. What's stopping them? Nothing, right? They've got all the money they'll ever need, and powerful friends if they need something money can't buy. Yet like you said, what's being done to fix structural issues within society?
The only structural changes I see are wealth disparities getting increasingly wider in society, with laws and tax cuts being favored for the ultra rich after each new presidential leadership. Who's putting the work into this? Not me, and probably not you. So who?
They for sure donate to make-a-wish foundations or whatever, which is great. But think of it this way: how does that help you or your kids when cost-prohibitive life-saving surgery is needed? Are you gonna quit your job and camp out near a rich youtuber's house to get that lucky chance encounter in the hopes you'll get picked for the next individual success?