Yes. That was a rather arrogant stab of jealousy. Big piles of concentrated wealth sometimes gets spent on important projects that governments (ie. normal people) won't or can't do.
Or not. It doesn't matter. Some already have so it can't get any worse. They've already generated enormous value in doing the thing that made them rich.
They're not feudal lords. We own our own property, not Bezos. He has almost no power over us. If nobody told you he was so rich, you wouldn't even know. That's how little it matters beyond jealousy.