When it comes to groceries and other very time sensitive shipments then yes they should deliver on their own, but making your own nationwide to door delivery sy

When it comes to groceries and other very time sensitive shipments then yes they should deliver on their own, but making your own nationwide to door delivery system would be a disaster. These are not easy businesses and it would be hard to beat the cost effectiveness of USPS, UPS and FedEx. They could start in fresh deliveries to limited markets and have those warehouses store commonly ordered products. Currently Amazon most often uses a courier for only the final ground leg from a distribution center. They already have their own delivery to deliver inter-warehouse. It would not be possible to stock the huge variety of products available on Amazon in very local warehouses. So I would not be incredibly worried if I were a package carrier now. This could perhaps take some of the business in some markets but I doubt Amazon will go private for the majority of its deliveries.