As other have said the system rewards sociopathic behavior. But you also have to consider in order to keep a billion dollars you'd have to be a sociopathic. Most people I've known wouldn't hold onto a billion dollars if it was just given to them. They'd either spend it and/or donate some until it was just in the millions or even less. It takes a certain kind of inhumane behavior to simply hold onto that kind of money. The idea of having the money is better than what can be done with it in their heads.