How? Oil is largely the reason Norway is better off than Denmark and Sweden. Norway seems to manage it's oil very well with an eye towards the long term.
Pretty much the whole damn coast has come to a screeching halt as the oil price drops. This because Everything is tied directly or indirectly to the continued extraction of oil and gas.
Anything else is a minority industry that can barely keep going because the oil export is driving the exchange rate through the roof.
This to the point that the government is fearful of doing anything major or else the exchange rate will really go out of whack.
Here is the thing, public buildings are disintegrating around us while the continued line out of the politicians is that we need to save "for future generations".
If you want to care for future generations you build, and you maintain what you build. But no, we must "save it for the future".
Damn it, we have basically turned Poland into a factory for "Norwegian" products. If you glance at a "Norwegian" chocolate bar these days it is likely to read "made in Poland".
From the perspective of swedes, we just notice the higher prices in norway. We don't consider Norway and the norwegians "rich" when we visit. The per-capita gdp doesn't translate to purchasning power.