There must be a different brain chemistry at work. Maybe increased levels of comfort and elevated pack status from the freedom of social transactions does this. I never understood why a lot of these fuckers don't just go away and leave everyone else alone when they made enough money for themselves to not worry about money. But I have come to realize that it doesn't work like this at all and there comes a profound change, most likely biochemical that promotes these drives.
I don't think there is any different brain chemistry at work. It is just human nature to want to do something with their wealth, for good or ill or whatever.
It is more likely that the people are naturally acquisitive and the ones that succeed then feel the need to continue to do things when the best thing for them and us is for them to stop and just enjoy their wealth.
