It's not the FSF's job to provide Anthropic with a business model. If it turns out that their business model depends entirely on copyright violation, they might not have a business model. That's true regardless of whether you think the case has any merit.
> Classic Hollywood, completely detached from reality. Did they propose any way for The Pirate Bay to continue earning any revenue, paying for its hosting, and developing new features, if they aren't allowed to redistribute movies for free?
Although it might not satisfy FSF there is a very simple way to do it - commit to release your models for free X months after they're first made available.