Why would the Danes in Denmark really care?
There are likely more Danish Americans than Danes.
No kidding. How many Danes have visited Greenland? How many could find it on a map. When a purchase price is finally put out there, the Danes may change their minds.
Denmark has 6.00 million people. Greenland has 0.06 million people, 1% of their "Motherland." I cannot imagine there is much affinity between the two places.
90% of Greenlanders are of Inuit extraction. They are strongly admixed with early European immigrant strains. One-tenth of the people are Danish, most of them born in Denmark.
So 6,000 people in Greenland have some association with Denmark. That's not a strong tie.
On the downside, the national dish of Greenland is suaasat, a soup made from seal meat. If we acquire Greenland, will they export that dish to us?