They should create a giant AI LLM model trained on that data. Then settle with some form of payment like others did (learning from the best LOL).
Then I don´t understand why once bought a book can´t be uploaded online? If you are not engaging in a commercial activity I don´t see the issue, the book was bought is not a state secret. By that logic the cookie trackers, that literally track/spy you and that buy and sell your data for profit and more, illegally should be priority, not some books that educate people.