Racism will continue to be a problem until black people don't care much about it. That day isn't nearly here, but it is nevertheless the bogey at which to shoot.W
The relevance of some questions is a matter of timing. In the 1950's, it would have made no sense to ask how other minority groups "made it." The legal and institutional obstacles to black success were insurmountable. But that has changed with the times. Obstacles remain, but they are of the sort that allows us to ask who Jews, Asians, and Cubans succeeded. These groups built parallel economies, sort of like the AFL and ABA. If they are integrated into the larger culture, fine. If not, the money's still green.
IMO, the object of anti-racist action in the business world should not be to remove all of the obstacles but to reduce them to mere hurdles that can be cleared, i.e., to the point that a black person can start a business without fatal opposition from whites. After that, parallel economic development is simply a better strategy than butting heads with the law of diminishing returns.
Black authors need to write more articles about how to start a business and fewer on how white liberals are crappy allies. You can fight for diversity, or you can make it unnecessary. History suggests that once diversity becomes unnecessary, it arrives on its own. But by then, it's not really such a big deal.