New York is more than the city - the city is more than Manhattan. The constant coming and going of people who work in the 5 boroughs aka the city (Manhattan, Brooklyn, Queens, The Bronx and Staten Island) or vice versus.
The New Jersey Path trains easily connect Newark, Jersey City and Hoboken to Manhattan. The Lincoln tunnel sees people driving into the city. Penn Station welcomes the people from Connecticut and Upstate on the commuter rails and the Long Island railroad, ferries bring people where they need to go.
Point is, New York is the mecca - the origin of trends and ideas - but it is influenced by the surrounding areas. It's a ripple effect - NYC influences out and then catches the waves that come back in.
NYC is a place but it's also an attitude and a mentality - like our beverages have attitude and something extra.