I wonder if we could have some kind of system that both incentivizes him to create in the first place, by granting him a temporary monopoly on the commercial ri

I wonder if we could have some kind of system that both incentivizes him to create in the first place, by granting him a temporary monopoly on the commercial rights, and yet ensures that his work will eventually become part of the public domain? It could center around the "right to copy". Hmmm, what could we call it?