I’m sorry, I don’t follow. Can you elaborate? Maybe I’m misunderstanding, but I think sub-contacting is heavily related to political risk mitigation, as it’s a method of spreading project money across many political districts.
IMO NASA has done the same with their selection of major center locations. It doesn’t make a lot of logistics sense to have your biggest centers in CA, OH, VA, and TX but it makes a lot of political sense if your goal is to avoid large programs being mothballed.