>Her basic assertion was that the simple accumulation of that much wealth is itself evil. They could do many things like build schools and since they choose not to they are evil.
This is, essentially, a debased version of the standard leftist argument that economic systems that permit this sort of concentration of resources are fundamentally broken.
Since people have to personalize everything into morality plays, the idea that the existence of such people is symptomatic of something broken in society turns into these people are why society is broken.
Granted, since they DO have the resources to fix a lot of issues and choose not to still doesn't say anything good about them. There is something to the adage that if you're not part of the solution you're part of the problem. And if you're directly profiting off the problems, potentially spending money on lobbyists and political donations that prolong the problems, and bidding for contracts with groups that are directly responsible for the problems. . . it starts to get a bit dicey.
The way the economy is, it is extremely doubtful that anyone can accrue that kind of wealth without having their fingers in at least a few morally questionable pies. Like, if you were a steel magnate in Nazi Germany, you were definitely involved in making the holocaust happen regardless of your personal feelings on the matter. If you didn't, someone else would have though, so how much are you really obligated to address?