WFME does "blanket" most of NYC very well from West Orange. Of the eight-million people in NYC, only 1.6-million of them live in Manhattan. And many of those people live on the Westside, and in the central part of the island where the underlying geology doesn't allow for building skyscrapers. I'm talking about areas like Greenwich Village, The West Villiage, the Meat Packing District, Chelsea, Soho, Little Italy, Chinatown, Morningside Heights and the Upper West Side. The signals from West Orange to those folks are not blocked or lost in the canyons of New York, and sometimes in other places the Jersey signals go right along the sidestreets, while the perpendicular signals from the ESB are blocked by buildings in the neighborhood.
Back in the 90s I had a friend who lived in a brownstone on the Upper West Side in the area north of the Museum of Natural History. He was a great fan of Jukebox radio coming off the top of an apartment house on the other side of the river, and up the Hudson in Fort Lee, NJ. He was doubtful when I informed him that Jukebox Radio was a 35-watt translator, and the Empire State signals he sometimes had trouble receiving clearly were 6-kw. But that was the case.
There are nearly 16-million people living in the defined New York Radio Market, and only one in ten of them live in Manhattan, and only a fraction of them live in areas where the tall steel buildings wreck their FM reception. And if you have spent a lot of time in those tall steel buildings you know that broadcast radio signals don't usually penetrate more than a few feet inside the windows even if the signal comes from the ESB, or when it came from the WTC. From its current location, WFME is not at any more of a disadvantage in those Manhattan buildings than anybody else.
From WFME's transmitter site you can clearly see across Staten Island and Brooklyn, and up into the Bronx and Westchester. Sure, there are some people out on Long Island that don't get as good a signal from West Orange as they do from the ESB, but they represent only a small fraction of the total market. Most radio stations ignore large chucks of the potential market with their formats. A programmer who decides on a Spanish language format, automatically ignores the vast majority of potential listeners who don't understand Spanish.
Cumulus will just have to ignore that small percentage of the market that can't get the signal, and concentrate on pleasing more of the folks in the areas where it has the strongest signal on the dial.