Most of the cargo doesn't come from Norway. We try to ship as much as possible from vendors directly to the ship, and not via Northern Norway where the entities involved are located.
Denmark then becomes ideal as we are close with the Danes politically and it's already a shipping hub.
We could have used Cape Town, but it would be harder to have control. Very little cargo fits on these planes and the flights are extremely expensive. We operate a satellite ground station there used for critical missions.