1. Department of Strategy, Globalization and Society, HEC Lausanne, Université de Lausanne, 1015 Lausanne, Switzerland;
2. Department of Humanities, Social and Political Sciences, ETH Zürich, 8092 Zurich, Switzerland;
3. Supply Chain Management and Information Systems, Rennes School of Business, 35065 Rennes, France;
4. Institute for Strategy, Technology and Organization, LMU Munich School of Management, 80539 Munich, Germany;
5. CEPR Centre for Economic Policy Research, London EC1V 0DX, United Kingdom