You're presenting it as if Kobo doesn't have its own store. It does: https://www.kobo.com/ww/en/ebooks https://www.kobo.com/ww/en/ebooks You can access it via

You're presenting it as if Kobo doesn't have its own store. It does: https://www.kobo.com/ww/en/ebooks https://www.kobo.com/ww/en/ebooks You can access it via Kobo e-reader, same as accessing Amazon's store on a Kindle. Somewhat more limited selection, but both contain Big Five publishers (Hachette, HarperCollins, Macmillan, Penguin Random House, Simon and Schuster) that own hundreds if not thousands of imprints. Calibre/OPDS server/custom software (like koreader) are an added bonus for the techies, but it's absolutely not a requirement. If your requirement is ease-of-use, there's no difference. If your requirement is a hacker-friendly device, you can do it on both, but it's in my experience somewhat easier to do on a Kobo.