> This does not happen with the Kindle Store.
It has, in fact, happened: https://www.nytimes.com/2009/07/18/technology/companies/18am...
Not saying that's what happened in this case, but it has happened, and it's a great example of why having your books (or any media) locked up in a walled garden is a terrible idea. (though this is far from being the only objectionable angle)