To me this seems a crazy idea. All UPS needs to do is make a phone call to Amazon and let them know that unless they cease and desist, the discount shipping will end immediately. At that point, UPS does two things: they effectively end Amazon's ability to invest in their own transportation wing and UPS suddenly makes a far greater profit per package. And while some of that volume may be diverted to FDX, I think it's safe to say that they will limit Amazon's diversion. Amazon isn't the lucrative accounts some people think they are. They are ferocious negotiators and ridiculously demanding. High maintenance, low profit. FDX isn't going to blow up their operations for them.
I agree it is kind of crazy. But Amazons dream of becoming an actual delivery company(is more crazy) with a NATIONWIDE DELIVERY NETWORK would be a game-changer for UPS and FDX.
I don't see Amazon pulling this off anytime soon because their investors are getting tired of no profits and just big spending with no returns on investment.
The amount of volume UPS and FDX move for Amazon(especially during peak) is huge so it is hard to imagine Amazon ever pulling this off as they continue to grow each year.
The irony in all this is that Amazons success and fast growth are due in large part to UPS mostly and also FDX.