I get it, and I also suspect that financial services is a large factor is US productivity. And even within financial services there is productivity in, say, retail banking and insurance that most people would equate with productivity in any service function on the one hand, and productivity in creating trillions in derivatives where the risk came to bite us in the arse. Was the "productivity" in that adjusted downward when derivatives fueled the financial crisis bomb? As others have suggested, I'd like to see productivity on a per-industry basis.