I am from one such community, so I can say what I think are the key factors here: 1) Refugee / Skilled worker policy combine to give communities from the globa

I am from one such community, so I can say what I think are the key factors here: 1) Refugee / Skilled worker policy combine to give communities from the global south a healthy mix of size in numbers and money to support many of them. Skilled workers from these communities are really generous and spend a lot to maintain their communities and community centers / the most unfortunate among them. 2) There is a much more collectivist mindset which is actually very helpful in a freer, more free market system. Many global south countries are less free in terms of business. But Western countries are better about these things. Communities abroad get along when the same people might not have been friends back at home, this cohesiveness lets them open and patronize businesses in the community better. These people can then save on costs (rent, food costs, etc.) while putting that money into collective asset control or other money making systems. 3) It's easier to find the community with Internet. In the past you would need to find or know someone when moving abroad and the options were limited. Nowadays a religious center, cultural center, or other association office or even just scanning the map for restaurant names and clusters can allow you to find your community easily from millions of miles away. In short, local white collar youth don't have the same collective mindset with each other, and cannot grow by adding more numbers to their ranks, so these are the main differences I feel.