Calibre + DeDRM plugin can make your purchases yours. There are also sites that host pirated books. In 2013 or 14 when I decided to get an ereader, I went from

Calibre + DeDRM plugin can make your purchases yours. There are also sites that host pirated books. In 2013 or 14 when I decided to get an ereader, I went from Nook to Kobo because Nook books weren't crackable, and then from Kobo to Kindle because I liked the form factor and fonts better. The moment I can't strip DRM from Amazon books is the day I pirate everything, and will purchase deadtree books to give to the library.