Migrant is actually the wrong word entirely, I think.

Migrants move around to follow the work. (Think more like "Nomad") Immigrants resettle in new places.

I'm reading more about it, and probably these restaurants survive based on a combination of:

- Family run, keeping labor low (labor always number 1 cost)

- Central Asian and Muslim customers (much more than just Uzbeks)

- Setting up in low-rent locations like strip malls

So a few big nights a week can sustain the family business. I guess there's a way it adds up to a profitable business.