Here’s what NYC needs to do to start its economic comeback

The ghost-storefront blight represents an existential threat to New York City’s future. Left unaddressed, it will crush the Big Apple’s normally indomitable spirit. Who wants to live or work where blocks of empty storefronts shout “failure” and provide sidewalk loitering grounds for drug dealers and vagrants?  Abandoned storefronts are ruinous to landlords, who must still…