That works both ways, I know of Indian developers who only hire other indians, or east Asians who stick together. In Canada it’s a normal thing, Toronto is a big city divided into a ton of ethnic neighbourhoods (there’s a little x for every mini culture or ethnicity).

This has a side effect of ethnic groups sticking together at work, where language, culture, religion, etc are similar.

And it also doesn’t mean economic exclusion either. In places like Brampton the highest income bracket by religion is Hindu #1, then Jews, atheists, and Christians.