Would it? I could see Amazon arguing that you're reselling the book, not the annotation storage/syncing -- and as a consumer I generally wouldn't have a problem with that argument. The book is the thing I want resale rights on, not Amazon account features.
I'm curious, what does the Kindle do with 3rd-party book annotations right now?
On Kobo, 3rd-party Epubs that are loaded onto the device are treated differently than books bought through your account. They won't be used for recommendations, and as far as I know, nothing syncs anywhere. If your device breaks, you can't re-download your 3rd-party files unless you personally backed them up somewhere.
I don't care, I buy most of my books directly from independent sellers/authors and side-load them. But it is admittedly a pain, and I have on occasion bought from Kobo's store just because I wanted to be reading right now instead of hunting around for a USB cable.
I'm curious, what does the Kindle do with 3rd-party book annotations right now?
On Kobo, 3rd-party Epubs that are loaded onto the device are treated differently than books bought through your account. They won't be used for recommendations, and as far as I know, nothing syncs anywhere. If your device breaks, you can't re-download your 3rd-party files unless you personally backed them up somewhere.
I don't care, I buy most of my books directly from independent sellers/authors and side-load them. But it is admittedly a pain, and I have on occasion bought from Kobo's store just because I wanted to be reading right now instead of hunting around for a USB cable.