They can't "close that loophole". It's an integral part of the EEA treaty. If the EU withdraws from the EEA treaty it would virtually guarantee that support for EU membership in Norway would sink like a rock out of sheer anger. It would lead to Norway withdrawing further from the EU, not joining, so it'd be entirely counterproductive.
This is true, Norway and Switzerland are strong economies that can stay outside EU. Norway have a lot of oil compared to the number of people who lives there, which makes Norway a more independent economy than for example UK. I do think Norway would benefit by becoming a full EU member. But there are also good reasons not to. So the EEA treaty is the best of both worlds. Norway lose and gain some.
Is there any reason for the EU to close that loophole now ?
It seems to be a pretty good partnership so far, and I did not read anything about a will from either side to change anything about it yet, but I might be misinformed
Not having to adopt the Euro is also a "special right".
It's not well known, but all EU countries are required to adopt the Euro (except for Denmark who have a real opt-out). The countries who haven't are using a loophole to bypass the requirement of Euro adoption, by purposefully failing to fulfill some standards.
Also, EU has a ruleset adapted to the climate of central Europe and not to cold places where almost no food grows and eating seals and fighting polar bears is how you stay alive. This is an extreme example, but Norway is more dependent on fish for sustenance than many other countries.
Norway is dependent on fish mostly because of the export value. A lot of fish is eaten in Norway, sure but the Norwegian economy is such that local production has very little to do with what people choose to eat.
The only place in Norway Polar bears live is Svalbard, far North of the mainland. Most Norwegians have never visited because it's far away (a 1h 40m flight North from Tromsø in Northern Norway - similar to how long it takes to fly South to Central Europe from Oslo) and way too cold and miserable.
Seal is something few people eat very often. A huge proportion of the population will never ever have tasted it. Like whale, it's uncommon these days.
> eating seals and fighting polar bears is how you stay alive
Your image of Norway may be a bit off..
It's true though that Norway is overly protective of its food industry. And arguably for good reason since it wouldn't be competitive at all if integrated with the rest of Europe.
As a Norwegian, I do like the idea that foreigners see me as capable of fighting a polar bear.
As for seals, I've eaten seal, I think, but it's hardly been a dietary mainstay... We used to have whale regularly when I was a kid, mostly because back then it was much cheaper than beef (and much tougher, and oily... it was not great meat - it's expensive now due to low supply and nostalgia).