Thanks for proving current copyright law makes no sense
Here's a better idea, a fixed fee for any work. You can buy the license to read a book for $X (for whatever purpose) in RAND terms - of course publisher/material costs go on top, so if you're buying an actual book you're getting the material costs as well - or streaming fees or whatever
You can already buy books today. Doing so for training is currently considered fair use.
Anthropic simply considered that cost prohibitive and chose piracy instead.