The Sony was out before the Kindle. There were other e-readers out before the Sony. I have no idea when the EPub/Mobi mess kicked off but I think it was about the time of the release of Kindle 1.
I do know that Sony did not use EPub initally, I have no idea what it used but it switched to EPub at some point in time.
I do know that BN and Kobo came into the game after the Kindle and chose EPub. BN using their own DRM and Kobo using ADE.
|