Key word, Should. If taxes actually went where people say it does, it might. And even then, it'd also take a lot of funding outside of just taxes, not to mention someone to actually start doing stuff about with all that funding. Also note on that list is rampant corruption and criminal syndicates mingling with the government.
I am absolutely arguing that. The rich in actual mid-to-south New York and elsewhere aren't actually taxed, why would the rich in Gotham be?