Well, gee, no wonder that people were buying them left and right when the tax discount was about 16-20k NOK per car on average!
And that is just buying the car - Norway subsidizes electric mobility in many other ways so even today registering a new electric is cheaper than a gasoline car, despite the gas powered vehicles normally costing about 50% less.
So, please, when waving this sort of argument about, don't "forget" to put it in context.
Norway is a special case because of government policies, not because Tesla did anything particularly great there. They were just the only ones on the market at the time so people essentially had to buy a Tesla if they wanted to benefit from the generous subsidies because there simply wasn't anything else available. Today the situation is different, though.