Yes, I think people are naive about how much humans base their creative work of things they have read/experienced when saying generative AI just copies what came before it. So is almost everything humans create.
A lot of entertainment is very derivative. Honestly, I wonder what kind of stuff will start happening in creative circles when generative AI content becomes ubiquitous.
Look at photography and how it affected the art world (arguably). Once perfectly reproducing images became possible art started exploring so much more than the technical aspect of how things looked. Impressionism, cubism, modernism, post modernism.
Being able to make a picture look like the subject lost almost all value, and art moved onto more abstract endeavours.
What will happen to writing when a “normal” book can be written in a day? What will happen to music when a celebrity singer can just be put into any song with the click of a button?
13! That’s crazy.