Is there a law saying that Fannie Mae is the only company that can do X? Because that's the case with postnord: only they can handle these plates, by law.
That’s not exactly the case though - the court in the other Tesla case, against the government, has ordered the agency registering vehicles to ensure Tesla can pick up their plates directly from the manufacturer:
https://www.svt.se/nyheter/inrikes/domstol-teslas-registreri...