Governments owe certain services and infrastructure to their people, such as highways, impartial laws and courts, civic order, defense against invaders, and open and affordable communications systems.
Historically, the United States was one of the first nations to emphasize a national postal system. Among our founding fathers, Benjamin Franklin was firm in his determination that the United States should have a postal service. He even served as Postmaster General before there was a United States.
Article 1, Section 8, of the Constitution mandates that Congress establish post offices and post roads. One of long-standing aspects of the Post Office and its successor, the Postal Service, has been the mission to provide mail access to all Americans, not just to people in cities or people who are physically or economically convenient to serve, but the vast majority of Americans.
While the Postal Service should be as cost-efficient as possible, cost-efficiency shouldn’t be its primary mission. Maintaining service to all Americans should be. That was why the post office and post roads were an essential part of the Constitution.
This background seems to have been forgotten. Amazon can use the Postal Service on Sundays to deliver packages for what I suspect is below the actual cost, using cost structures that I’ve critiqued previously for their unreality, and now Trump is talking about privatizing the Postal Service, enabling that “private” successor to gouge the public and provide less service.
We can run huge deficits for national defense and all manner of other “necessary” services, but comparatively small deficits for postal service are apparently taboo… which says a great deal about people and politicians, particularly about Republicans.