Does capitalism breed greed, or elevate the greedy?

When a billionaire Koch heir announces that he's taking a break from suing ex-fiancees to give back their engagement rings and playing tennis at Mar-a-Largo in order to produce designer shirts covered in money-bags, it's worth asking: did capitalism turn this guy into a useless asshole, or does capitalism find the useless assholes and shower them with money? (more")