Earlier quoted context omitted.
Regardless of access rights to the data, I've yet to read a compelling argument why LLMs are even derivative works. You can't identify your Reddit comment in a ChatGPT conversation. How is it any different than a human learning English by reading Reddit? That human wouldn't be violating copyright every time they said a phrase that was repeated by hundreds of Redditors. My favorite LLM analogy so far is the "lossy jpe…
I've been thinking of the output as fanfiction/fan art. It shares many of the same complications regarding the ownership of ideas, commerical intent of writing, competition, and copyright. Fanfiction is generally a protected form of expression, but requires the work to be "transformative". Unlike with parodies and critisisms, fanfiction can be much harder to distinguish from original work. From that perspective, a la…
https://en.wikipedia.org/wiki/Legal_issues_with_fan_fiction
Fanfiction and fan art also tend to run afoul of the infrequently (but occasionally) litigated part of copyright - copyright of fictional characters.
https://en.wikipedia.org/wiki/Copyright_protection_for_ficti...
I came across this with the Eleanor lawsuits - https://www.caranddriver.com/news/a42233053/shelby-estate-wi... - and while I believe that that instance Eleanor falls on the "this shouldn't have been copyrightable" (took a bit to get there), the question is "what protects the representation of Darth Vader?"
In general it tends to be ignored and tacitly encouraged... but it isn't protected.