What we’re taking about is suing the tool that could potentially be used to generate copyright violations. Which seems silly?
Steelmanning your argument a bit more: OpenAI is selling the fact that you could potentially generate copyrightable material as a subscription, because the artwork is somewhere in the compressed data?
Abstracting the underlying tech a bit: If we imagined a printer that could faithfully represent whatever you told it to and you told it to reproduce Da Vinci’s that you later sold as originals while others told it to reproduce original forms of art (successfully), who’s at fault here, you or the printer?
Seems obvious to me it’s the user of the printer, not the printer itself, even if the printermaker is making money.