So who was this thundering bank critic? None other than Lawrence Summers, the Obama administration’s chief economist — and one of the architects of the administration’s bank policy, which up until now has been to go easy on financial institutions and hope that they mend themselves.

Why the change in tone? Administration officials are furious at the way the financial industry, just months after receiving a gigantic taxpayer bailout, is lobbying fiercely against serious reform. But you have to wonder what they expected to happen. They followed a softly, softly policy, providing aid with few strings, back when all of Wall Street was on the ropes; this left them with very little leverage over firms like Goldman that are now, once again, making a lot of money.

But there’s an even bigger problem: while the wheeler-dealer side of the financial industry, a k a trading operations, is highly profitable again, the part of banking that really matters — lending, which fuels investment and job