Unfortunately, I can't speak intelligently as to specifically what should be done with IP, but broad strokes I agree that output should be public domain and public facing models should be open. I do feel as though there should be a way to compensate people for inputs used for internal commercial purposes.

If there's training needed for something and it has separate books/video, a company should not be able to throw that into an AI, and generate a new book/video for their internal use. Either they need to make that resource available publicly, or purchase a specific license for internal use of the original material for AI. I don't know why I think that, mostly just vibes based because if they hired a person/company to do the same I'd be fine with it, so maybe I just have some cognitive dissonance going on, but it feels different. The way that there are commercial and personal licenses, I think having an AI license might make sense. But again, I'm way out of my depth and field of knowledge here, so I could be way off.