Makes me curious about the idea of a nonprofit organization whose purpose is to manage a platform that gives as much money as possible to artists. Perhaps that's a naïve vision, but I feel like a lot of artists would hop onboard if the interface worked, and that could overcome the network effect.
Look at this sideways for a second and you'll see that you just described precisely and exactly the structure and supposed-mission of every performing rights society in the world.
And yet they just don't seem to have any interest in it.