Wow, I had no idea about Kindle Unlimited revenue sharing program!
As a reader, I’ve mainly used it as a bookshelf for books I really want to read but don’t really want to buy (and may or may not ever actually read). Every now and then I take a book or two off to add a new one, but I’ve only ever actually read the books I could buy and mark up with my own highlights and notes.
Maybe now I will borrow books by authors I actually know and want to support instead. Even if I’ve bought their book(s) already, sounds like authors could make more money if I borrow the book as well.
I guess that’s why Amazon limits book loans to max 10 at a time — to keep from spreading revenue shares too thin (e.g. due to hoarders like me lol).