404 media reported this recently. Excerpt from the article :
It’s possible to scan books without destroying them, but cutting the spine makes it cheaper and faster. Additionally, the judge in the lawsuit ruled it was fair use and not a copyright violation for Anthropic to scan a book for training data in part because it destroyed the original, printed copy. Essentially, it’s the customer’s right to take physical media and store it digitally, and destroying the original copy means that copy isn’t duplicated and resold, and isn’t cutting into the publisher’s business.