As the Washington Post pointed out (and common sense concurs), the only way a Scandanavian-style democratic socialist economy can exist is because there is a United States to drive the economy enough so that there's enough productivity that those countries can afford their socialism.

Unfortunately, I can't find the article now, but it surprising to see in the Washington Post.

If the USA adopted these policies, the biggest change would be to drag the top quintile down, while the bottom quintile wouldn't change much. Oh, and the top quintile are the people who create all the jobs, so it's just a vicious cycle.