It is possible that Balmer will go the way of Detroit.
Ditto Philadelphia, which is ironic, as arguably, back in the 1970s, PHL seemed less likely to go into decline than New York.
Both Balmer and Philly had the same problem as the affluent folks fleeing the city proper back in the 1920s. This didn't happen in New York, where the wealthy (for the most part) stayed in the city. Of course, Baltimore and Philly also lack Wall Street.