Globally, yes, but these suburbs are different because many of these people have lived in the city. NYC has fantastic commuter transportation. People move to manhattan for a job, get married, have a kid, move to the suburbs, and continue to work in manhattan. Their children grow up going to the city on the weekends and move there when they graduate college. The manhattan population is 1.6m, but on any given weekday there are 4m people on the island. 750k people go through grand central every day (Westchester/Fairfield), Penn station another 300k (Long Island). The PATH has another 200k (New Jersey). This is all while excluding the drivers.

> I imagine this has influence on hiring.

I'm not sure how I could convince you, but I've lived here my entire life. There is absolutely no difference between people in the suburbs and in the city because they are the same people.