I wonder if a good approach to this would be to get ahead of the AI problem and declare AI sentient (right word?). Then all IP produced by an AI would be owned by that AI and the creator of the AI would have no rights or say over it or the proceeds generated by it. Some would argue that would really hurt the progress in AI but I think that is a possitive in this regard. AI could still be used as a task performer that would generate lots of savings/revenue, it would just stop the IP issue.