THIS IS THE MAIN REASON WHY SOCIALISM IS OVERCOMING CAPITALISM IN AMERICA - we must be careful how we use words.
Social projects aren't the same as socialism; in other words, Sweden isn't a socialist country. It's a capitalist country with a left-leaning electorate, hence the popularity of social projects. What you're talking about is the popularity of social ideas and projects. In the US, as well as in Sweden, these social projects can only be funded by capitalist profit.