One barrier to entrepreneurship in the U.S. is lack of health benefits when you're self-employed. There's not much of a social safety net here compared to most

One barrier to entrepreneurship in the U.S. is lack of health benefits when you're self-employed. There's not much of a social safety net here compared to most of Europe. Thus, one would think that Europe would actually be a better place to quit your job and pursue some startup idea. Why isn't that the case?