From my perspective, everybody trains on the knowledge and experience of those who came before. AI just does the same thing at scale.

I do not value copyright. All it does is give you standing to sue if somebody reproduces your work. It does not differentiate or account for parallel creation. I cannot count how many times I have "created" something, only to find it in a research paper later.

Part of the reason I think copyright has no value is that, in general, individual copyright owners don't have the deep pockets necessary to sue someone who violates their copyright. If anyone is violating the spirit of copyright, it's corporations that insist you assign your work over to them as a work for hire, or outright ignore your copyright. (looking at you, Disney's Atlantis).

A significant benefit of AI that doesn't get talked about enough is that AI has a much greater reach over all the information it was trained on and can draw connections that would be invisible to someone operating at the human scale.

The fact that these companies are making money off of it negates your argument.