Do you really believe the people at the top of organizations don't bust their asses, and didn't bust their asses to get where they are?
The truth is, some people have more ability than others and they take it further. Some waste the talent. I can't sing like Pavarotti could sing, no matter how hard I tried or desired, and Pavarotti could have wasted his talent. But he didn't. He worked hard. Maybe he didn't have to work as hard as I would have, but that's his gift in life, and he's entitled to it. I love to sing, but I can't do what Pavarotti did. Should I have made him do less or demand the government cap his ability because I can't achieve the same thing?
Some have circumstances that get in the way of their progress (and some complain about it and some suck it up and move on). Some get lucky and some pull strings and pay off to move up. But isn't it clear that, generally, people are good, which includes people in high places, and people in high places have a whole different set of responsibilities. I would guess if you got rid of all management and left it to the staff level, the first thing the staff level people would do is appoint a leader, or what they would see as a fair and impartial group of leaders (like a board of directors). And if they tried to run the business without leadership, they would soon run aground. So, when those leaders feel the responsibility of survival falling on their shoulders, they will start making the same tough decisions that they once opposed.
If the business someone is running is something they started from scratch and busted their ass to survive and make a going concern, I'd bet they're going to be that much more protective of it, and it's well right of them.