I doubt that ebook resale will ever come to be because it has to be brokered by a third party in order to ensure that there is a transfer of goods. Vendors will never allow third parties to resell their ebooks. Vendors and publishers will also demand such a large cut that it won't be worthwhile to the consumer.

My real concern with the XBox One story though is that they are selling a physical product but only offering the rights conferred with a digital product. This will create confusion among some consumers and I have no confidence that prices will be lowered to reflect the reduction in rights that consumers are receiving.