I guess I’m referring to Indian and Chinese immigrants who come here with pretty much nothing and then through sheer hard work manage to become the richest demographics in the country.
I think you're saying that all hard-working immigrants succeed. But even I, as a non-American, have read stories of immigrants to the USA working 3 jobs and still struggling to pay the rent, let alone a mortgage.
Are they not working hard enough? If hard work alone was the predictor, why are there hard-working people struggling to pay for the most meagre of lifestyles?