There's a vast difference between an NYC that has massive inequality and the NYC that's being created today -- one where gentrification that squeezes out not just "crime" but anyone below an upper class income status. That's the trend and future that Byrne describes:
> If we look at the city as it is now, then we would have to say that it looks a lot like the divided city that presumptive mayor Bill de Blasio has been harping about: most of Manhattan and many parts of Brooklyn are virtual walled communities, pleasure domes for the rich (which, full disclosure, includes me), and aside from those of us who managed years ago to find our niche and some means of income, there is no room for fresh creative types. Middle-class people can barely afford to live here anymore, so forget about emerging artists, musicians, actors, dancers, writers, journalists and small business people. Bit by bit, the resources that keep the city vibrant are being eliminated.
He goes on to describe a number of elements that contribute to these trends:
> The talent pool became a limited resource for any industry, except Wall Street. [...] any businesses that might have employed creative individuals were having difficulties surviving, and naturally, the arty types had a hard time finding employment, too.
Environment drives out creatives -> creative industries have hard time hiring (start moving elsewhere) -> Environment gets even worse for creatives.