What are you talking about? Lots of people talk about this. That's the whole point of the push to increase "representation" in a bunch of fields - so there are exemplars of success able to be used as inspiration for others.
Ooh boy, 6 black billionaires in the US. There were
half as many white billionaires in one (virtual) room this week. Add Trump and his Education Secretary and you've got two more. That's five. His Commerce and Treasury secretaries are each about halfway there.
Throughout American history, blacks have been denied many of the opportunities that would've enabled them to own the fields. Much of middle class wealth in the US has been accumulated via home ownership and then through college education, both of which were denied to black Americans en masse for much of the time whites were accumulating it. Additionally, while Jews were discriminated against in the US (and elsewhere, obviously) in both housing and employment, they were still treated better than blacks and were more able to conceal their ethnicity. As a whole, Jews aren't as wealthy as the stereotype suggests, but it's sort of an ironic stroke of luck for them that the professions into which they've been historically shunted have turned out to be some of the more lucrative in our modern knowledge economy. The same is not true of blacks.