Note, I've never claimed Sweden's model would work in the United States as it stands. Scale, culture, and current levels of corporate greed/corruption, would make it nearly impossible to implement currently. Sweden's model is not the panacea some would attempt to argue, but it also is nowhere close to being the cancer that others attempt to argue without any statistical analysis or proof to back up their obnoxious and simple-minded claims.
Does Sweden have nationalized industry, or just high taxes and a large welfare state? I have no idea. Sometimes people conflate the two, but socialism is pretty much defined by the government owning business.