Black gangs, unless they borrowed money to buy the drugs, most likely won't be seeing any wise guys, probably Dominicans, or Mexicans, maybe Colombians possibly, with different groups operating in different spheres of influence.
Also, if there are no Italians present, or crew based in the area, there is no reason to intersect...
Unless there is a business relationship like a Barnes -Madonna, black gangs arnnt paying tribute like that anymore, not like a street tax like in philly, they don't have the muscle for something like that, and because they don't contribute drug supply, they don't have the leverage like that either...