Every great civilization (Rome, Greee, France, Russia) has fallen when the excesses of the rich become so egregious that the poor rise up to destroy them. Will happen in the US in the not so distant future? Quite possibly.
Do the people on this list have too much money? Absolutely. Do any of them use their wealth to benefit humanity? Unlikely. Should we beproud of their success or envious? Neither. We should be digusted.