Isn't this self selection bias? The most risk tolerant people are also the most likely to immigrate to a new country? The more conservative people buckle in fo

Isn't this self selection bias? The most risk tolerant people are also the most likely to immigrate to a new country? The more conservative people buckle in for a life at the fruit stand or whatever they have in their home country. Maybe not a great life, but it's steady and they know it keeps them fed.