Yet some minorities are doing better than the majority that has been doing the discriminating. Certainly that is true of Japanese Americans and it has been true of other minorities in other countries around the world. Jews, for example, have prospered in countries seething with anti-Semitism. The Chinese have never had equal rights in Indonesia or Malaysia, but they have had higher incomes than the Indonesians or the Malays.
Groups differ in their skills and cultures and always have.
More fundamentally, there was never any reason to expect them to be the same, in the first place. Geography alone is enough to prevent all groups, nations or civilizations from having the same skills. The British created the industrial revolution, but there was no way that the peoples of the Balkans could have done so, since the Balkans lack both the raw materials needed and any economically feasible way of transporting those materials there. Man may discriminate but nature discriminates on a scale that dwarfs what human beings can do. For most of history in most of the world, people living in cities have been more advanced than people of the same race living in the hinterlands or up in the mountains.