My point was that socialism =/= not economically free ~ economic slavery. I just used the term slavery to stand in for "not free" but I guess that was overkill, although I'm still not sure what the appropriate word for the opposite of freedom would be. In any case, just because there's an extensive welfare state and public ownership doesn't mean that the economy is automatically unfree. Socialism does not equal not having economic freedom, it has much more to do with having a strong public sector. I'm sure conservatives would have you believe that socialism = not having economic freedoms, but there's nothing in the definition of socialism that would suggest that there can't be economic freedom.
I feel as if you're biased to the point of having to use the no true scotsman argument - Finland has more economic freedom (is a better economy) than the US so it couldn't possibly be socialist, perhaps because that would suggest that a socialist system could somehow do better than a more pure capitalist system? My takeaway wouldn't be that Finland couldn't be socialist, but that Finland does socialism AND capitalism better than the US.