Maybe we need to limit them a bit more, but there's an evolutionary factor or purpose or something at play. I remember a psychology lecture where they talked about it and how in hunter and gather societies most people would be content for a while when they found a good gathering area, they would hang out and gather the food and eat. But they had certain people that didn't want to stay they just wanted to move on to find the next better gathering area and would practically be forced to eat and carry enough food before they could keep searching. Those people were important too, and I feel that's the psychology of billionaires today. There is never enough they don't even actually care about the bounty it's just the idea of getting more and more.

I also remember an experiment found that something like 8% of people swerve over to purposely hit turtles on the shoulder of the road. I would be much more interested in identifying and containing those people.