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Amazon is making it impossible to remove the DRM from Kindle Books
(goodereader.com)
This is a most excellent place for technology news and articles.
https://libbyapp.com/
Assuming you have a card from a participating library.
Every time I go to checkout a book on Libby it's like 6-10 weeks' wait. If I put a hold on it then I'm just not in a place to read/listen at that time and then I feel bad for hogging it instead.
Better to just pirate or buy from a non-DRM distributor.