"Such cities might look somewhat like the dense tall cities of The Fifth Element or Star Wars"
I suppose that's the editor talking, and I think it's a misleading thing to say. Em cities would probably not be accessible to humans and their vehicles, and they could be built in inhospitable places where the land isn't expensive.
I doubt cheap land would be much of a priority. But yes they wouldn't be comfy for humans.
"Such cities might look somewhat like the dense tall cities of The Fifth Element or Star Wars"
I suppose that's the editor talking, and I think it's a misleading thing to say. Em cities would probably not be accessible to humans and their vehicles, and they could be built in inhospitable places where the land isn't expensive.