Audible, An App Update, and the Case of the Disappearing Bookmarks

In the Amazon / Audible world we never really own our books. We pay a license to use the books. We can't re-sell our digital books. We can't give our digital books. We can't take our digital books and read or listen to them on another platform.

If Amazon wants to delete my books they can.

Does it not seem feasible to you that something could go wrong with Amazon's technology or Amazon accounts - and your books (or your bookmarks) could disappear?