That is an argument. However the article doesn't have that conclusion. It concludes: "I'm with Matt Yglesias, who writes that it's hasty to blame the nation'

That is an argument. However the article doesn't have that conclusion. It concludes: "I'm with Matt Yglesias, who writes that it's hasty to blame the nation's financiers for literally stealing from the middle class' wages. It seems much more likely to me that a smorgasbord of both conscious public policy decisions (like outsourcing, free trade agreements, and low interest rates) and unintended phenomena (rising education and health care costs) combine to make the rich richer and the poor no richer."