Afraid that your question is based upon the faulty premise that Amazon is profitable, FedEx is more expensive, and the USPS is less reliable. As for employees

Afraid that your question is based upon the faulty premise that Amazon is profitable, FedEx is more expensive, and the USPS is less reliable. As for employees who want to quit, they can always move on and delivery pizzas. 1)Amazon Stock May Be Up, but the Company Still Doesn’t Make Any Money - http://www.thedailybeast.com/articles/2013/10/25/amazon-stock-may-be-up-but-the-company-still-doesn-t-make-any-money.html http://www.thedailybeast.com/articles/2013/10/25/amazon-stoc... 2) Study Shows USPS Beats UPS, FedEx on Delivery Times and Cost http://blog.stamps.com/2014/03/19/study-shows-usps-beats-ups-fedex-on-delivery-times-and-cost/ http://blog.stamps.com/2014/03/19/study-shows-usps-beats-ups...