BS, others are not allowed to compete in the letter business which is where the big drop in participation has come. The package business is another story and the PO has been literally shown the door as the competition has proven they do it better and cheaper.
The USPS isn’t in reality losing money. In 2006 Congress passed the Postal Accountability and Enhancement Act. In that law they required the USPS to prefund it’s retiree health care benefits for the next 50 years. No private company, and no other governmental agency, is required to do that. All others are pay as you go. That fund comes out to $75 billion dollars to be funded in a 10 year span.
I regularly use private delivery services. Didn’t know they were all illegal.