“Why is the United States Post Office, which is losing many billions of dollars a year, while charging Amazon and others so little to deliver their packages, making Amazon richer and the Post Office dumber and poorer? Should be charging MUCH MORE!”

I read recently USPS delivers 60 percent at least of all Amazon Prime packages, and those coincidentally are the ones that Amazon is charged the least of any shipping costs. UPS and Fed Ex primarily deliver the Amazon packages that customers are being charged real shipping costs on. Amazon's goal is to eventually deliver everything themselves via drones or their own (underpaid) delivery folks, but that's going to take some time to implement. In the meantime, they're exploiting the USPS's financial issues and pretty much keeping them afloat because they have a sweetheart deal with them where they get charged way less than Fed Ex or UPS.

One thing Amazon is doing now is setting up their own parcel lockers in large apartment complexes, and charging customers a rental fee to retrieve packages. That's another fishy set-up that isn't getting much publicity. Some folks are refusing to pay Amazon that hidden fee, so instead of delivering their packages, USPS is now having to figure out which customers can't get packages delivered, and are holding them at the post office for the customers to pick up (for free - but it's an extra time consuming thing they have to worry about).