Well, it’s not that we (Europeans) are “advanced”. It’s more that having a socialized healthcare program is common sense for us. A for-profit company cannot be left in charge of treating patients as there are few patients that could need expensive treatments. No company would want to treat this people.
Other point I would like to make is that our healthcare is not “free”. It’s paid by high taxes be are obligated to pay to the government (the taxes are as high that I don’t even want to know the exact amount in my case but is around 25-30% of my salary).