And why the wealth is to be preserved while political power/position not? What is the difference?
Too many people when it comes to economics simpily repeat what either the WSJ or Limbaugh says, and nothing else, Free Market "uber alles" so to speak, without any notion of responsibility, a large contrast to the almost paternal corporate behavior that existed into the 70s and even 80s.
John Paul II said it best, Freedom without responsibility is tyrany.
Do I really have to explain it?
Well, all right. Political power = license for violence, a very dangerous thing. While wealthy people are at worst (according to your argument) merely useless.