Denmark would likely low key love to shitcan greenland. They are a massive money drain, welfare state. Their minerals exist but not enough to turn the place net positive to their colonizer.
If Denmark could come "steal" something like the Pine Ridge Reservation in the Dakotas, it would be an imperfect analogy. As long as we could lose it while still saving face, it would be absolutely amazing economically for the USA.
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Denmark sent about 4,3 Billion Danish Krona to Greenland last year, this is about 0.6% of Denmark's budget. For a nation that made a surplus of about 130 Billion in 2025 it does not seem like a something Danes in general want or need to shitcan.