[joe5150]

I'm not familiar with Readwise but it appears they only store highlights? Publishers probably don't like that but don't care enough to do anything about it, whereas "uploading copies of books to the services to do AI stuff with them" is the subject of many ongoing lawsuits right now, so they'll be very interested if this takes off.

[philomath_mn]

Right, I just don't know where the dividing line would be. What % of a book is acceptable?