The USPS predates the constitution itself and was in later years was expressly granted a monopoly in order to provide for universal access to postal services for all citizens. So even if a a route is running at a loss, the postal service will provide for it’s services at a loss.
This service is a service as such. To say it is running at a loss and it needs to be privatized is like saying the armed forces run at a loss…
Trump’s appointee of US Postmaster Loius DeJoy is (unsurprisingly) a Republican Party donor and (again, unsurprisingly) a shareholder with $70 million of shares in companies that directly compete with the USPS.
Companies like UPS and XPO Logistics. It is within his interest for the USPS to fail.
And within Trump’s interest for people not to be able to mail in their votes.