I am sure we can come up with a list of minority communities that have been successful in Western society: Jews and Quakers are two notable examples of religious minorities.
In the East there are also examples: such as another religious minority, the Parsees of India. Some are the richest people in India, with family names like Tata and Mittal which dominate many industries (not least the Steel business.)
They are successful in Business, the Arts and Academia and their numbers are actually quite low numbering a couple of hundred thousand.
The thing these groups have in common is that they have a tradition of scholarship and faced sanctions on their economic activities that encouraged them to find a more accepting society. A distinct religious identity also tends to create a network that strengthens the community.
If you think about how you get on in a new country, where do you start?
You look for level playing fields, any area where you can make some progress that does not depend on being qualified by your heritage. New areas of the economy that are open to competition and haven’t been sewn up by vested interests.
You can get on by:
Being good at examinations for professions and academia.
Developing expertise in premium cultural skills.
Starting businesses by innovating in new expanding areas.
The Quakers were very marginalised as a relogious minority in the UK in the 18th Century. Those that did not emigrate found themselves excluded from the established professions, the established church and their pacifist teachings excluded them from military service.
So they went into the smelting iron and steel and then became the engineers who drove the Industrial revolution. Their abstinence from alcohol also led them to dominate the world of confectionery and soft drinks.
The path of the Jewish community followed the same logical path.
However, some economic paths are more risky than others.
Having a religion that allows the lending of money for interest, a practice long regarded as sinful in Christianity, made Jewish communities highly vulnerable to local political interests and subject to persecution.
The fortunes of diaspora and minorities are an interesting subject, but we should not get too hung up on any one example.
I am sure the tales of great success for some minorities are more than outweighed by tales of woe by many others.