Suppose hypothetically that one out of every 200 people or so is a jerk. In today's world these jerks will discover that if they enter government or business they can become super rich and powerful jerks. Do we conclude, therefore, that markets (or government) have caused greed? No, the fact is that once we no longer live in tiny tribes of 200, anonymity allows some people, who would have been assholes in a small tribe but who would have been sanctioned there, to go off and become jerks on a much, much larger scale.