I for a time worked for the USPS- what lots of people don't seem to realize is that pickups and last mile deliveries are precisely the businesses that UPS and FedEx want no part of. They are extraordinarily complex in most areas and very expensive. The money is in flying and trucking the packages across the country. They actually pay USPS to do it for them in a lot of places because it's cheaper than doing it themselves.

After all the USPS has been in that business for 200 years and not too many people are bullish on them. Why would Amazon getting into that business be good for them?