From the comment in the thread it seems people are not aware of Kobo readers… They are great hardware-wise and the default format is standard epub. You can find

From the comment in the thread it seems people are not aware of Kobo readers… They are great hardware-wise and the default format is standard epub. You can find everything in this format, create your own books with tools like Sigil, convert from other formats with Calibre, etc. Please stop conflating ebooks with the crappy format of one vendor.