Scandinavians seem to be the only ones who can make a mixed socialist economy work well.
It works when everyone is Scandinavian. But watch what happens now. They will develop a non-working class and things will change. Socialism works when everyone’s inclination is to work hard and pull their own weight.
It never works when people have different levels of personal production. Those who work less get more for doing nothing. Those who work more, see it and stop working for others, and start working only for their selves. A good example are the Russian collective farms vs. the personal gardens. Read Anna Karenina.