Norway is the one that actually makes it work. Their GDP per capita is slightly higher than the US and more than $30,000 higher than the other Scandinavian countries.
"Captive tax base" means the industry can't move to another country as a result of high taxes. You can move factory jobs to China by moving the factory. You can't move oil and gas extraction jobs to China by moving the oil field.
and a basic sandwich costs 3x that of in denmark :)