> This appears to be the cost without subsidy, with the mail service now run by a private company.

That just means that whatever it actually costs to deliver mail to/from whatever parts of Denmark they provide service for, the people who use the service will pay that cost plus an additional cost on top of it so that the private owner (and perhaps their shareholders) can line their pockets. The nice thing about public services is that you avoid paying that extra money just so that a small number of people can personally profit from it. You can also lose a lot of transparency and control over how the service is run.

That said, I'm a bit envious of the lack of junk mail.