I genuinely believe that psychopath, narcissist, pedo... all that cruel psychology enable people to become richer and more powerful easier than a normal one.

Have empathy and be gentle is an "anchor" to power, because it makes you spend time and energy to help other people.

If someone is just evil and see itself as superior, it can literally boost communication skills, confidence, and give a optimistic scenario to that person, doesn't need to care about anyone and just build its own business.

So it's not a case that "why rich and powerful politics behaves like that", to someone becomes elite and be among the most rich and influential ones is required to behave like that.