They actually did this.
> Anthropic spent many millions of dollars to purchase millions of print books, often in used condition. Then, its service providers stripped the books from their bindings, cut their pages to size, and scanned the books into digital form — discarding the paper originals. Each print book resulted in a PDF copy containing images of the scanned pages with machine-readable text (including front and back cover scans for softcover books
Great, so now instead of allowing anyone to train on already scanned books for free, we can have only the richest big labs buy all the books and scan them privately to train their proprietary models. And since they buy the books used, authors still don't get any money. But at least the books are destroyed afterwards! What an improvement!