Trying to go after AI companies with copyright is a fool's quest.
Copyright has very specific rules that set bounds that AI training does not cross.
The google hathitrust case, among many, clearly establishes the legality of web crawling/scanning copyrighted material to produce a vastly different product. In this case, transforming content into executable software. Memorize that word: transforming.
It's the wrong tool for the job.
As the name clearly states, copy-right is about making and distributing *exact* (or near-exact) copies that can *substitute* for a protected product. (Another word to memorize.) Creating and distributing a vastly different product is literally FAIR USE. A hundred years of precedent says so. It is a waste of time and money going after the chatbot and the training database, both of which are *software* and not content. Technical and legal illiteracy combined.
The cases claiming unjust enrichment will probably fail, too, but at least they have the "virtue" of novelty and that might fly to some extent in the nutty ninth.