If it can be modified without your consent,. If it can be pulled from your devices without your consent,. Etc then you don't own those books.
If Amazon nukes your account on you do you still think you own those books?
If it can be modified without your consent,. If it can be pulled from your devices without your consent,. Etc then you don't own those books.
If Amazon nukes your account on you do you still think you own those books?
Some people do read books more than once. There are a few books I enjoy enough that I've read them quite a few times over the past 25 years or so. I've lost, sold, or given away the physical copies of nearly all of them, and have replaced them with ebooks. I would be very upset if those ebooks just disappeared someday.
(I don't have to worry, as I've de-DRMed and backed up all the books I've purchased. But I don't expect most Kindle owners to know how to do that, or even know that they need to do that to be safe.)