Sure, go for it. But anyone who's that fabulously successful already owes a lot of her success to a record company and agent and producer, etc. A musician's entourage can still have a role to play in this if he/she chooses to cut them in with PeerTracks. But I think it will work best for mid-range artists who may not have an exclusive deal with a record company. They have talent and they have a modest fan base who comes to their regional concerts, but they've never been 'discovered' to the point where they could monetize their music. Now they can.
At some point, would a large scale manager or record company use PeerTracks to showcase their next big thing? Maybe so.