There's no doubt that Marxism, whatever form it takes and whereever it is practiced, cannot do what the free market does. It never has, and it most certainly never will. Let's just hope that another 60 million lives are not sacrificed at the alter of Marx.
I must disagree with your statement, "The real problem is that blacks, whereever they are, have not been able to create industries, companies and economies that work."
Really? Are you sure about that? Ever hear of the "Black Wall Street" of Tulsa, OK and/or Raliegh/Durham, NC?