It would be interesting to see someone dig into the differences between the capture of language and culture, and control over how it gets fed back into cultural discourse, that we fear corporations achieving with commercialized LLMs, and the control pre-internet publishers had (and to a certain extent, still do), over what content, and in what format, language was disbursed and distributed. I am not at all certain that having your work used to train LLMs is a bigger threat to writers ownership of their work than publishing houses were and are.

I also suspect that if we had an effective mechanism to prevent use of copyrighted work in training, it would necessarily behoove an artist to opt their content out. Will you really want to be excluded what may well become the canonical mechanism for searching and generating language?