What is obvious here is that the poor neighborhoods are profitable while the affluent neighborhoods are not. Throughout the poor neighborhoods, the city is — TODAY — bringing in more revenue than they will spend to maintain the neighborhood, and that’s assuming they actually invest the money to maintain the neighborhood (which they have not been). If they fail to maintain the neighborhood, the profit margins will be even higher.
This might strike some of you as surprising, yet it is important to understand that it is a consistent feature we see revealed in city after city after city all over North America. Poor neighborhoods subsidize the affluent; it is a ubiquitous condition of the American development pattern.