There is zero reason for them to buy UPS or Fedex, zero. Let me tell you a secret, Amazon's relationships with shipping companies are so good that they can get

There is zero reason for them to buy UPS or Fedex, zero. Let me tell you a secret, Amazon's relationships with shipping companies are so good that they can get incredible deals on rates. That may seem obvious, but it's true and it's important. Because it means that there isn't a huge amount of savings to be had by buying up a shipping company. The advantage to Amazon would be acquiring the business of the shipping company, but those companies operate on thin margins and have to deal with a lot of hassles that our outside of Amazon's business scope right now, so overall it doesn't seem like a good idea. In terms of vertical integration, it makes far more sense for Amazon to simply build whatever it needs itself if it really wants to, it's already done some of that with Amazon Fresh so they are keenly aware of the issues in that part of the business and have a good idea of when it would make sense to get into it or not (currently, for last mile delivery, the answer is "sometimes but usually not").