Cmon Pop Musicians Give Away Your Music for Nothing!

How is it that pop musicians, most of whom are more image than talent, can become millionaires overnight when whatever they do has a lot less value for the human race than a doctor or a plumber?
They should not be able to sit back while they effortlessly make money from downloads on itunes. Their music should be free on piratebay and like the rest of us, they should be forced to turn up at a place of work to make their bread, which frankly, involves turning up a few times a week at a gig venue to sing some songs.