More here:AI industry groups are urging an appeals court to block what they say is the largest copyright class action ever certified. They've warned that a single lawsuit raised by three authors over Anthropic's AI training now threatens to "financially ruin" the entire AI industry if up to 7 million claimants end up joining the litigation and forcing a settlement.

AI industry horrified to face largest copyright class action ever certified
Copyright class actions could financially ruin AI industry, trade groups say.

One comment sums it up: “Their entire argument is essentially this will bankrupt us so please don't let it happen.”
Also...
Also backing Anthropic's appeal, advocates representing authors, libraries, and digital rights groups—including Authors Alliance, the Electronic Frontier Foundation, American Library Association, Association of Research Libraries, and Public Knowledge—pointed out that the Google Books case showed that proving ownership is anything but straightforward.
The above organisations need to explain very clearly to authors why they’re taking this position. To me, I’m afraid it looks like they suckers.