Introduction
The introduction describes the main puzzle to be explained in the book, briefly previews the argument, and then shows why the question it asks is both theoretically and empirically important. As wind and solar grew from cottage industries into $300 billion global sectors, China, Germany, and the United States each developed distinct constellations of firms with starkly different technical capabilities. The chapter argues that globalization itself has such reinforced distinct national patterns of industrial specialization. Economically, globalization has created opportunities for firms to specialize through collaboration with others. Politically, new possibilities for specialization have allowed firms to repurpose existing domestic institutions for application in new industries. Against the backdrop of policy efforts that have generally failed to grasp the cross-national nature of innovation, the chapter offers a novel explanation for both the causes of changes in the global organization of innovation and their impact on domestic politics.