Whether or not it should be profitable, it is currently having serious financial problems.
I'm curious about what you see as "financial problems". I'm more curious as to how the USPS can have financial problems, but other public services cannot. The National Park Service, for example, runs at a "loss". It greatly benefits the surrounding tourism (just like the USPS greatly benefits us businesses). But in and of itself, it does not generate enough income to cover expenses. Same for most government services. Whether or not you think all of these services is needed is a different (libertarian) story, but complaining about their lack of profitability should not be on the table for reasonable discussion.
The government is not in the business of making money. That's for the private sector.
The postal service, while seemingly in the same ballpark as UPS or DHL or whatnot, is a different service. USPS mailboxes are federally protected property. USPS mail is secure in ways that cannot be done by a private service. Taxes, voting, deeds, etc. are all important to have done on a public scale by a public service.
Now, for the benefit of the doubt. Let's say that DeJoy is actually acting in good faith. Let's say that most of the moves he's making are good financial decisions and are good for the long term efficiency of the Post Office. W
hy on earth would he start mucking around three months before the projected largest mail-in vote that our country is coming up on? What on earth is so important to change that it couldn't wait a few months? This is the hardest part for me to buy. This is what I think should be the canary in the coal mine for those who are suspicious of the people complaining. There seems to be a lot of issues happening with the USPS that were just so gosh darn unnecessary. He should have known that he'd be in the spotlight for messing with the system. It was already in the news before the changes were made. How can someone acting in good faith defend that!?
If you are a business and you are coming up on holiday season, you don't start shuffling around all of your procedures and making major changes to operations before the waves hit. You wait until after holiday season so that you can work through the kinks and make sure that your employees and changes to have unforeseen effects. If I'm going to print out a large document, I don't buy a new printer and try to install it the night before my presentation. I use the old printer that might have some issues and prints slow, but at least I know how to use it. Then I buy a new printer after the presentation.
If DeJoy wanted to show that he really was trying to make a better USPS for the country and the Republicans were really trying to work toward an honest election, their actions are not showing it. They are showing quite the opposite. I think to show a gesture of goodwill, they could handle this situation better. Make the most secure, best possible mail-in election system that they can to show that they can handle being honest, then dismantle the USPS later. I don't care. But to do it before the election is absolutely disgraceful.