It's something of a tangent, but Amazon was not legally required to literally go out and delete books off of users' devices - or at least if they were, due to s

It's something of a tangent, but Amazon was not legally required to literally go out and delete books off of users' devices - or at least if they were, due to some contract they signed with publishers, that was their own fault. Indeed, after that event Amazon said they would no longer do so.