> They don't need to be terrible humans to be successful so why do they do it? This seems to be par for the course of them in terms of shady shit they've been accused of or caught doing.

Because they are a bunch of rich people who simply do not give a shit and the rules do not apply to them?

A snotty bully gets the lesson "there will eventually be somebody bigger" beaten into him. A snotty rich bully never actually encounters that.