Krugman has a very good NYRB essay on the question of why austerity has been politically successful although it’s a bad idea in theory that has worked out horribly in practice. The first reason is that it provides a superficially appealing morality tale: bad economic consequences must be the result of indulgent choices. The second:
So is the austerian impulse all a matter of psychology? No, there’s also a fair bit of self-interest involved. As many observers have noted, the turn away from fiscal and monetary stimulus can be interpreted, if you like, as giving creditors priority over workers. Inflation and low interest rates are bad for creditors even if they promote job creation; slashing government deficits in the face of mass unemployment may deepen a depression, but it increases the certainty of bondholders that they’ll be repaid in full. I don’t think someone like Trichet was consciously, cynically serving class interests at the expense of overall welfare; but it certainly didn’t hurt that his sense of economic morality dovetailed so perfectly with the priorities of creditors.
It’s also worth noting that while economic policy since the financial crisis looks like a dismal failure by most measures, it hasn’t been so bad for the wealthy. Profits have recovered strongly even as unprecedented long-term unemployment persists; stock indices on both sides of the Atlantic have rebounded to pre-crisis highs even as median income languishes. It might be too much to say that those in the top 1 percent actually benefit from a continuing depression, but they certainly aren’t feeling much pain, and that probably has something to do with policymakers’ willingness to stay the austerity course.