It seems pretty clear to me that DC's Gotham City is not supposed to represent a real place. It's far too grim to be somewhere that anyone would live, or businesses would open up in. I know Grant Morrison actually tried to make Gotham more realistic, but the current Tom King run solidifies for me that there's no way Gotham is supposed to be some twisted characterization of New York or something.
Have the writers ever said that Gotham is a metaphor, and if so, what?