True. However, I have found that the ones in charge usually take great pains to not appear to be the ones responsible for anything, and the best way to get to them is to make the smaller fish give up who is paying them to act on their behalf.
The big-money operators may feel well-insulated from the machinations they instigate, however when you get one, three, seven, or nineteen or more individuals reinforcing each other's stories despite the main operator's claims... the truth is bound to come out.