https://en.wikipedia.org/wiki/Fair_use#4._Effect_upon_work's_value https://en.wikipedia.org/wiki/Fair_use#4._Effect_upon_work's... Seems to say that market har

https://en.wikipedia.org/wiki/Fair_use#4._Effect_upon_work's_value https://en.wikipedia.org/wiki/Fair_use#4._Effect_upon_work's... Seems to say that market harm is the single most important factor in fair use, and it's basically impossible to show that a person writing their own fan fiction without any distribution would prevent an author from exploiting their own work.