Not everything deserves to be read by everyone. Reading a short summary may help the reader to understand whether it's worth at all to go into details. (there were techniques for this for long before AI. Speed reading, skimming through) Also, the prompt my help highlight certain aspects, concepts to focus on. Of course, this is more about non-fiction.

I've actually dropped reading some books in the first chapters, because those books repeated the same idea many many times. Thus, the street is 2 way: do not bloat, do not be summarized.

I guess, next step in AI will be movie on demand: read this novel and make a N minute movie. By that time probably some way for the author to receive royalties will be found as of course people understand.