The problem, of course, is that the creators of the work still need to participate in a scarcity economy to live. There are examples of efforts being made to fund creators outside the traditional scarcity-based mechanism, such as patreon funding, github sponsorship, and the like, although I admit they appear to only currently be useful for those who would be unable to leverage the traditional system effectively anyway.
While I may not have the answer to funding creators, I firmly believe that we'd be going backwards to insist on forcing scarcity into a post-scarcity space.
https://www.nytimes.com/2019/08/19/technology/amazon-orwell-...
Copyright is useful for preventing others from using characters you created, but frankly I don't see the value in that. Moreover, it isn't even effective as fan fiction is incredibly common anyway. We can see how this would work with the proliferation of open source and the commonness of forks. It really isn't a big deal.