I'm surprised you're confident they don't.
You think someone's picking up a first edition Steinbeck and destroying it so it gets into the next training corpus?
Or is it like, technical manuals and incredibly dry almanac content?
I think the details actually matter here. I'd love to see a realtime list of these titles being scanned and processed. Then we'd know if anyone actually gives a care.
That said I'm willfully ignorant of most "headline news" so I'd be curious to see how heinous the issue really is.
> You think someone's picking up a first edition Steinbeck and destroying it so it gets into the next training corpus?
I doubt the low-paid workers stripping, scanning and shredding the books are checking what anything is. I'd imagine they are dumped with a big crate of old books and an hourly quota they have to rapidly process.
Arguably old technical manuals with limited print runs are even rarer or more valuable to historians. We have lots of copies of Steinbeck, albeit not first editions.