Another Pond Object Lesson

In the world biosphere we have many other predators including, the US government.
I understand why herons and raccoons hunt and then find pond fish. Food. I don't understand why the millionaire, billionaire boys have to hunt throughout the world. Their money makes them money in wheel barrows via investments. But yet, it's not enough. Once I read that even with the filthy rich, people desire 10% more than they have. I don't understand that. I guess I was just "born bad", not of a proper mindset to be one of the elite power brokers, a proper capitalist. I'm more and more inclined to think simpler, and to think that a simpler government is necessary. I cannot really effect any change. I'm just a little voice out here.