I’m looking to change my reading and buying habits away from Amazon and need an alternate source for my ebooks. Where can I buy ebooks that won’t expire or have their licence revoked and will allow me to download a copy of that ebook I can store on my own system regardless of the websites status?
Seems like the starting point for this would be e-readers with open device content control. So instead of relying on my_email@kindle.com or something like that in order to get files onto the device, you’d use your own file server or something for the device to connect to.
Then the long-term ownership just consists of having the epub, mobi, or pdf files of the books you want to own, and passing them through whatever device content control system you’re using.
In other words: calibre.
It does all that and more