I am sure it could but then what is the point? Consider this, lets assume that someone did manage to use LLM to produce a very well written novel. Would you rather have the novel that the LLM generated (the output), or the prompts and process that lead to that novel?
The moment I know how its made, the exact prompts and process, I can then have an infinite number of said great novels in 1000 different variations. To me this makes the output way, way less valuable compared to the input. If great novels are cheap to produce, they are no longer novel and becomes the norm, expectation rises and we will be looking for something new.