No argument here. It is insane to me that if I want content that isn’t locked into a particular ecosystem, I have to seek out public domain material or pick from the small subset of books that is sold DRM-free books in an open format. For anything else, money can’t buy flexibility. For most books, the only options for digital are accepting the DRM, waiting until copyright expires (good luck with that one), or privateering with out a letter of marque.