1, That’s silly, there’s tons of democratic socialist countries that are doing just fine - today! Bolivia, Norway, Finland, Sweden, Denmark, Canada, the Netherlands, Spain, Ireland, Belgium, Switzerland, Australia, New Zealand - think the US fucks with their way of governing?
All of these countries are free market economies, though. If you classify a country that has public programs as socialist, then USA is a socialist country.
Also, just as a detail, Switzerland is probably one of the most capitalistic countries in the world. They have nearly a flat tax rate, very small amounts of corporate / capital gains taxation and a health care system that is nearly privatized. And it’s all working pretty damned well for them.