Comment by jawns

You've misunderstood the case.

The suit isn't about Anthropic training its models using copyrighted materials. Courts have generally found that to be legal.

The suit is about Anthropic procuring those materials from a pirated dataset.

The infringement, in other words, happened at the time of procurement, not at the time of training.

If it had procured them from a legitimate source (e.g. licensed them from publishers) then the suit wouldn't be happening.