Interesting, I hadn’t heard about the correcting of Bernie. I haven’t followed these small European countries all that closely but my basic understanding is they were pretty capitalistic in nature for quite awhile, reached a point where a number of them turned to a more socialistic economic model and when that brought down their economic growth they turned away from it.
More or less. With Sweden, that's basically what happened. They were more socialized in the 70s and 80s, but started moving towards privatization in the 90s. They've reached a point now where you could argue that they are more open in many markets than the US is.
Denmark is more economically free than Sweden. I don't know as much about their economic history, but they've been trending towards more privatization as well.
This is a good rundown of where various nations are in terms of economic freedom: https://www.heritage.org/index/ranking