Eh. I would say a relatively high proportion of corporate CEOs are sociopaths. But most rich people are normal people, psychologically speaking. They're just sheltered from how the non-rich live, and basically abstract them as being non-people.
Again, the problem with the system is not "bad people are at the top." The problem with the system is...the system. Sometimes it provides incentives for the worst kind of people to get into positions of power and abuse it, and sometimes it makes good people look the other way. But it's the fault of the systems, not the individuals meshed within it.