Since the GFC a lot of macro bets in both US and EU have been bets on political will and central bank actions. In late 2010 Bank of America was technically insolvent (based on analysis similar to yours), but the Fed went to work and backstopped the market in a multitude of ways and the valuation soared. In 2012 I would have bet the farm that Greece was headed into bankruptcy, but the Greek people didn't revolt (as much as anticipated) and so the ECB effectively nationalized most Greek debt across the rest of the Eurozone. I'm no expert but I try to apply these lessons to all new modern crisis I hear about. Underfunded pensions will destroy certain states, or social security will be broke and unable to pay out benefits? Sure; we'll see.