Companies compete on the decisions they make. For years--even decades--in response to intensifying global competition, companies decided to outsource their manufacturing operations in order to reduce costs. But we are now seeing the alarming long-term effect of those choices: in many cases, once manufacturing capabilities go away, so does much of the ability to innovate and compete. Manufacturing, it turns out, really matters in an innovation-driven economy.

In Producing Prosperity, Harvard Business School professors Gary...