I'm not sure what your concern is here. What makes you assume these people live in the city? While the cartoon is cute, One of two things will happen: 1. The

I'm not sure what your concern is here. What makes you assume these people live in the city? While the cartoon is cute, One of two things will happen: 1. The service will decline, people will complain, and the salaries will increase until they are enough to live in the city, or attractive enough to someone to commute. 2. The service won't decline, because these people were not living in the city anyway. Most of the police officers i knew for DC, for example, lived in the suburbs of Maryland (a 1 hour commute). I doubt most teachers in the bay area were living in SF, they were priced out of the market a long time ago.