Is Training AI On Copyrighted Content Fair Use? - Casey Muratori

Casey Muratori argues that training AI on copyrighted content is unlikely to qualify as fair use because AI outputs directly compete with and economically harm the original creators. He references the four-factor fair use test, noting that the Supreme Court considers market harm the most important factor. Since AI companies openly acknowledge their tools will replace the workers whose content was used for training, Muratori concludes the economic harm argument against fair use is unequivocal.