It's not about the max travelable distance in the country but the max distance actually traveled for most trips. The higher density (and population concentration in the south) reduces the latter and makes maintaining a charging network much more practical (their high adoption rate also help a lot with that.)
Edit: The reason why this is the important measure is because what people care about is how often their trips require N charging stops not the maximum number of charging stops they might have to make.
But what about those living in the north, in the Fjell, and those working in remote spots such as forests? Are those really served well by EVs, and is it really all that sustainable to subsidy EV?
Edit: The reason why this is the important measure is because what people care about is how often their trips require N charging stops not the maximum number of charging stops they might have to make.