The North Pole is migrating - towards the east and somewhat South I believe. There is speculation that London could end up in the arctic... not sure how that would affect Greenland, but I have heard that Florida could end up equatorial. Yikes!
Greenland offers many uses, civilian, resource, corporate and military. It’s also huge. Even the ice has value. The Danes are too dumb to exploit it to their advantage, so it’s us, China or Russia. I don’t see Greenland being under Danish rule in half a century.
It's not the North Pole that is migrating, but the magnetic North Pole -- where your compass points. The magnetic North Pole is migrating from northern Canada across the "top" of the earth towards SIberia, just missing the geographical North Pole.
That’s the magnetic pole, not to be confused with the axis of rotation which would have to shift pretty abruptly to swing London into arctic climes...