As much as I would like to socialize LLMs and ban proprietary LLMs, I'm pretty sure the issue here is with the distribution of the books.

It's wrong to distribute books in PDF or epub containers, but it's fine to distribute them as GGUF?

Because that's what OpenAI is doing with the books they-- again-- illegally acquired. Huge AI companies are the ones pirating media at scale and literally everyone except the AI companies have to bear the consequences of that.