This is partially why I don't buy print books anymore, unless I have no other choice (like random region restrictions on ebooks I want to read).

Sadly, I'm completely locked into the Amazon ecosystem for ebooks, but at least there I know what I'm getting.

Are you truly locked in?

I still have a kindle 4 from 2011 that works fine. If you have a lot of Amazon only ebooks, there’s nothing stopping you from keeping an old device for those.

I switched to a Kobo and have zero regrets. It has overdrive/libby support and I can check out books from my library directly to it. The Kobo store is fine as well and I can maintain a calibre library for everything else

I converted all my Amazon purchased books with Calibre and now read them using a Boox Go 7 - between that and Standard Ebooks I’m probably set for life.