It already happens. Instead of a book look at TikTok for example. Come up with a cool product, if it sells at all, it will be immediately counterfeited.

The issue is that copyright is only protecting massive corporations.

Did copyright helped against AI? Nope.

If copyright was eliminated, say you are a great up-and-coming filmmaker, you could go make your own marvel movie. You might break into the industry because of that. You make some one off superhero movie is far less likely to hit with an audience.

Copyright doesn’t help small individuals, it only helps corporations protect themselves against us.