A very uninformed question.
To which you even provided a partial answer.
Haha! Never underestimate the incredible abilities of American business to successfully commercialize anything. Don't worry about whatever "prohibitive" costs you are fretting about, just look to provide opportunity for US business. They'll handle the rest.
Yes, we have a much needed and strategic US military base in Greenland. It's called Thule. Vital.
I suppose if this were 1500, that mentality would hold. It's idiotic now.
-----------------------------
All of you see emphatic about something you know little about. How do you guys feel about the acquisition of Alaska? How do you think Russia feels about it?