You actually just convinced me of the exact opposite. Because copilots "use" of the works _was_ the learning. So it would seem to me that Microsoft needs to a

You actually just convinced me of the exact opposite. Because copilots "use" of the works _was_ the learning. So it would seem to me that Microsoft needs to apply "fair use" to copy and redistribute _the entire works_ they used for training. In which case lack of fair use my well be the least of their problems, they are really crossing into Computer Fraud and Abuse Act territory similar to when Aaron Swartz "borrowed" MITs data.