I went to a an expensive private school for college and there were a lot of old money students there. They didn’t all have the last name “Carnegie” or something

I went to a an expensive private school for college and there were a lot of old money students there. They didn’t all have the last name “Carnegie” or something else imminently recognizable, of course. Plus, that money may get divided and spent over time, but it’s usually invested. It’s not like after 100 years it’s the same amount of money adjusted for inflation, if the next generations didn’t mismanage it.