The real issue here is that it likely costs much less to print these books yet customers are paying expecting an actual normal quality print. Amazon has used purchasing power to dominate book sales and now it’s driving up profits by cutting costs on book production.

Personally I switched to ebooks a while ago, and not Amazon (I have a Boox reader, which is Android based, and buy epubs from other stores such as ebooks.com and also read public domain books from Project Gutenberg). Less wasteful (no book printing, no delivery) and avoids Amazon. I also use my local library.

“I’m concerned about the ownership of ebooks”

Buys books via Amazon.

I really wonder about the agency of people. OK, you bought the book, good to support the author. Now go get a known good copy of it that you can disconnect, there’s hundreds of places you can do that. Put it in Calibre or whatever else you use or just drop it in your filesystem (icloud doesn’t count, dummy). Then it’s yours.