It's not "any other business"; it's a shared resource that improves the lives of all citizens. And we WANT it that way. "Any other business" would not offer or employ any of the features we expect from our Post Office (systemwide flat rate parcel & 1st class letter, 6d/wk delivery (for free!), lack of surge/congestion pricing). If you think UPS and FedEx aren't taking profit away from USPS think again.