From the Wall Street Journal:
Tea parties aside, the anti-corporate anger hasn't so far led to a movement with specific demands, let alone a new political party, as in the past.
"Today, populism is a kind of sentiment that bursts into view in times like these, but there is no real movement behind it," said Columbia University historian Alan Brinkley. "The public just doesn't mobilize around issues in the way it once did."
The country today is different. America has an enormous middle class that is heavily invested in the financial system and is hardly about to organize for its overthrow.