Or that ages of "wives tales" are actually true and wealth really does something to our psyche. It's true to say that immoral people get into these positions and make the rules, but I think it's overly simplistic to believe that is the entire reason.
The more terrifying analysis is that people do change and not always for the better. The system is stupidly good at corrupting people and power/wealth do something to our monkey brains that is insanely antisocial. People unfortunately absolutely do become worse in the system, and it is designed that way.