the US Gov still makes up for any shortfall which is the billions, in addition the US Mail has a monopoly on 1st class mail, stamps etc. FedEx, UPS cannot legally deliver that type of mail. So what happens is the postal service raises prices on stamps to subsidize it small package delivery to compete with FedEx and UPS. FedEx and UPS don't have that luxury.
That's why you see USPS stamp prices go up nearly every year, yet magically their small package prices stay flat.
Nothing against you, everybody has to make a buck, I'm just saying.
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