1. Amsterdam Business School, University of Amsterdam , Plantage Muidergracht 12, Amsterdam, Noord-Holland 1018 TV, The Netherlands . e-mail: j.p.arrieta@uva.nl
2. Department of Economics and Management, University of Pavia , Via San Felice 5, Milan, Pavia 27100, Italy . e-mail: roberto.fontana@unipv.it
3. ICRIOS-Bocconi University , Via Roentgen 1, Via Sarfatti 25, Milan 20136, Italy . e-mail: roberto.fontana@unipv.it
4. Department of Management Technology and Economics, ETH Zurich , Weinbergstrasse 56/58, Zürich 8092, Switzerland . e-mail: sbrusoni@ethz.ch