Piracy is not theft. If something can be copied infinite times without any effort with broad societal benefit, then it's a moral imperative to do so. The opposite is gatekeeping in the name of monopolistic profiteering and the wealth concentration that the modern broken IP law enforces.

Besides, Anthropic did allegedly buy the ebooks they trained on so it's not like they even did that. It goes both ways though, they should get comfortable with their models getting distilled and opened up for everyone to run however they want. LLMs trained on people's data belong to the people.