Power and influence allow one to be a shitty person without having to deal with the consequences that other folks might, so the situations where that happens are outrageous and rightfully get a lot of exposure. However, this is a consequence of the fact that you already need to be powerful. Unless you get lucky, or otherwise hit the jackpot, you generally have to be a nice person to work your way up to that point.

Not going to lie; taking advantage of others can be a great short-term business strategy. Long-term, not so much. People tend to remember shitty behavior.