I think you're right. A large part of the joy from creative endevours is actually getting good at something, and having other people enjoy your work. In the face of instant high quality generative AI placating the entertainment needs of the masses, we are creating a society where most people are unable to enjoy human creative expression, in part because human artists are just too slow. Attention spans are already shrinking, and after getting used to generative AI, few people will have the patience to wait for an author to write the second part of his magnum opus.