That's not really their fault.

https://www.bloomberg.com/view/articles/2018-04-04/congress-...

> The law requires the Postal Service, which receives no taxpayer subsidies, to prefund its retirees' health benefits up to the year 2056. This is a $5 billion per year cost; it is a requirement that no other entity, private or public, has to make. If that doesn't meet the definition of insanity, I don't know what does. Without this obligation, the Post Office actually turns a profit. Some have called this a "manufactured crisis."

alternatively, it means that all those other institutions are actually loss making when one factors in their pension obligations