Flyboy,
It sounds like you've never been on that side of aviation. Aircraft looks mean nothing on quality of life or pay.
Famous stars and musicians continue to end up dead as a result of aviation. My educated guess is their managers and talent companies continue to use lowball charters and hire lowball people since the expenses reduce their possible management fee percentage.
As for the clients? Not always, but I found most tyrants come from a background with an axe to grind. When they ride in the back of a jet, they're busy proving to the other jet owners why they belong and even more so, telling the pilots and those attending them in the air and on the ground why they don't belong with them anymore.
This happens more with celebrities. I found most self made business owners to be pretty good. Middle management promoted into jet riding privileges? Not so much. By far, the worst were poor (hot looking) girls who married into riding the jet class.