1. Department of Management and Technology, Bocconi University, Milan 20136, Italy;
2. Invernizzi Center for Research on Innovation, Organization, Strategy, and Entrepreneurship, Bocconi University, Milan 20136, Italy;
3. Centre for Economic Policy Research, London EC1V 0DX, United Kingdom;
4. Institute for Strategy, Technology and Organization, Ludwig Maximilian University, 80539 Munich, Germany