NYC is booming. The rest of the state is an economic basket case. Bad climate, bad amenities, bad economics. NYC is booming because it is a great place to live if you have money, and more and more folks do. The place is becoming more like central Paris. Neighborhoods within easy reach of the Manhattan magnet are all gentrifying.
Manhattan's lots of fun. It's a cultural, financial and trade center, but not an industrial one, I guess. I get there occasionally. Have been in upstate NY off and on recently too, as my daughter went to college there. I really like upstate NY, it's beautiful and the people are friendly, but the place seems on the decline to some extent. Downtown Schenectady looked like a ghost town last I was there, but some downtowns look that way just because the centers of commerce moved elsewhere. But I remember when most small towns in upstate NY had a factory. I have the impression that many of those are now closed.
Beautiful Mohawk Power building, Syracuse. Art Deco, 1932. Miami Beach doesn't have anything close.