Nationalized industries are nationalized because they shouldn't have to care about profits and losses beyond a basic duty to use resources efficiently. The exis

Nationalized industries are nationalized because they shouldn't have to care about profits and losses beyond a basic duty to use resources efficiently. The existence of the nationalized service is deemed to be so important that it must be run by the state to prevent any possible instability or interruptions. With that being said, the situation of the USPS is not simple - it's been suffering political interference from elected officials for literally centuries. A very good example of why giving too much oversight power to elected officials and having too many political appointees is very dangerous.