Naaaah, you understand it all wrong!
Artists are like tax payers: they don't need all the money they earned, and a special organization has to take care of the rest of it. Of course building such organizasion to help those people managing their money generates huge costs, which have to be recompensated with higher fees... and at the end of this, organization is already a powerful independent being itself, and noone even remembers, what was the reason to create it in the first place.