What matters most is what people with extreme wealth do with that wealth because the power means those actions can affect many many people. Listening to them can help you predict what those actions may be, either because they say outright what they are planning, or because the tone of their rants can indicate a mindset that would lead to some actions being much more probable than others.

I hate having to listen to rich people. To me its as bad as having to listen to politicians, but these people affect my life (whether I like it or not) so I have to listen to know what's coming.