> Maybe the musicians who just do studio work have to start touring instead.
No more value in composition, only in live performance? What if you're a great composer but not much of a performer? Most people remember The Beatles for their studio work.
How about contractual work? Say that you'll make a new song/album if people pay you a certain amount of money. As a bonus, this system would encourage artists to actually produce new music instead of milking a dead cow.
There are definitely some creative types who have optimized their business around the affordances copyright has provided. But can they pivot to a less copyright-dependent model? Maybe the musicians who just do studio work have to start touring instead.