Wall Street Isn't Enough (Edward L. Glaeser, City Journal)

"New York City has become too dependent on the financial industry. In 2008, 44 perecent of Manhattan wages were earned by workers in finance and insurance; the following year, even after the financial crisis and economic downturn had battered the industry, that share stood at a still-enormous 37 percent. And the track record of one-industry towns isn't good..."