Anything will work with Northern Europeans (or Mormons, in reference to another thread) so that doesn't prove anything.
The key test is whether {something} works with cultures where other things fail.
Come to think of it, that seems more likely now.
Only 100-70 years ago Sweden was a very classist society with quite severe internal conflicts (workers were gunned down by the military in an incident in the 30s for instance).
In the 17th century Sweden was an imperialist country dedicated to the bloody wars of several ambitious kings (Gustav II, Karl XII, etc). Supposedly some people in Germany still warn their kids of the Swedes...
So my point is that Scandinavia was not always a peace-loving hippie region dedicated to sensible socialism-light. That stuff is quite recent.
Any sensible, rational "stuff" is recent, anywhere in the world. Until very recently, no country or culture were good places to be.
If so, that's evidence for the "Swedes can make any system work" theory.
Just be careful to not unwarrantedly extend the shadow of violence and dictatorship over the socialist ideas too. I know it sounds like trying to tell apples from oranges, but surprisingly many are ignorant, consciously or not, of the difference, especially in the US.
A free market system with socialist overtones can work wonderfully well. Just look at Northern Europe.