Because I can think of a few other externalities that help non-EV far more than the ones you mentioned (not taxing them for ruining our health and climate, for a start).
This all seems an overdue correction to me. But I'd go further and support non-individual transportation more, too.
Where does the headline suggest that? It simply states the makeup of sales.
I think it's much more newsworthy that 40% of cars sold use petrol, when they cost DOUBLE because of taxes.
But because of their tax exempt status, the price premium for electrics is much smaller in Norway than in most other countries.
One small thing which I've started to really appreciate is the almost non-existing engine noise. So relaxing driving it.
Also the superior acceleration comes in handy many times.
Also, I'm not sure what the OP is on about with this:
not taxing them for ruining our health and climate, for a start
Since electric cars aren't taxed, either, that's just playing with numbers.
Ditto for construction vehicles, which rarely travel long distances, often want to be heavy for greater traction, and can have surprisingly low power output. (The Cat D5K2 weighs 20,000 pounds but only has a 105 HP engine: https://www.cat.com/en_US/products/new/equipment/dozers/smal... )
I can't speak for Norway, but in the United States it is very common for Ambulances to travel difficult roads and sometimes non-roads. They have heavy-duty engines for a reason.
In terms of the technology, I don't see anything stopping those from happening right now.