>>There's an interesting correlation between immigrants and entrepreneurship (old-school building a profitable business entrepreneurship, not SV-type scaling an unprofitable business entrepreneurship). My take on this (utterly my own opinion) is that immigrants are less likely to get jobs, so more likely to start their own businesses.

As an immigrant, I think it's more that we're more comfortable with taking risks (leaving one's home country and emigrating anywhere is a huge risk, after all), so we don't have a big problem with abandoning steady paychecks and diving (back) into a sea of uncertainty.