Coming in late to this but TCBK has a unique perspective on these things so I'll just share a couple thoughts.
Asians, Jews, the successful minorities, have integrated into the western power structure. They did not do so well by running 7-11s or stir fry shops in their own community. Half the IT consultants my brother uses in Toronto are asians mixing in and doing well by it.
David Duke, your new hero (ok a little hit deserved hit with teh jab here), ran a group called the NAAWP, sound familiar? He, and many white supremacists, as well as the alt right/light blah blah blah justify their BS constantly by saying that blacks do it too. So you want blacks to emulate a group that justifies its nationalism by saying it is just mirroring what blacks already do. Makes a lot of sense. Never mind the fact that successful whites have nothing to do with these WP tiki torch carrying losers.
Black lives matter, affirmative action, black history month, black studies, etc. All aimed at trying to create a black based identity and for the most part, one that instills pride and a social ethos. It already exists, it just has not been enough to solve the culteral issues the black community faces. It's certainly not a good justification for the relatively more successful white community to break out the citronella.
I get that the goal of this this convoluted story is to lay black issues at the feet of liberal america rather than the legacy of slavery and segregation but it's rather strained. At least you get to a somewhat reasonable economic conclusiom, but it's not clear what you saying is the solution except that blacks should be anti immigrant and anti liberal and subscribe to some vague economic bootstrap nationalism.
Real policy would talk about things like inner city infrastructure, policing, education, and yes regulatory / other reforms to support local business. This really just boils down to another set of team playing.