Just because someone is paid a lot doesn't mean they're not under-compensated. Remember the sports team strikes? They were making lots of money before but they felt they weren't getting enough of the value they created so they did a strike and proved it.

Wages are (very purposely) not an efficient market so a group making more than most doing the same kind of work does not mean said group is overcompensated. It could be that the entire group is under-compensated, some of them just less so.