Three Theories, No Common Framework
What the BMG suit establishes institutionally is that the music industry has stopped treating AI copyright as someone else's problem to litigate first. BMG's complaint alleges Anthropic copied and reproduced lyrics from hundreds of copyrighted works — framing training as reproduction, not transformative use. That theory is aggressive precisely because it does not wait for a user to generate an infringing lyric; it locates the infringement at the moment of ingestion.
Swift's trademark approach is structurally different and, in some ways, harder to defend against. Copyright requires proving copying; trademark requires proving consumer confusion about source or endorsement. AI-generated content that sounds like Swift or mimics her persona can fail the copyright test and still satisfy the trademark one. The two theories together create a legal perimeter that does not depend on any single doctrine surviving judicial scrutiny.
The billionaire's case against Facebook adds a third axis — platform liability for AI-generated deepfakes used in financial fraud. Courts handling that claim must decide whether a platform that hosts AI-generated scam content is more like a publisher or a product manufacturer. The answer restructures the entire downstream liability chain for AI deployment.