1. Assistant Professor in Law and Economics and “Brenno Galli” Chair in Law and Economics, University of Lugano; Postdoctoral Fellow, Department of Economics, University of Siena; Fellow Centro Studi Tocqueville-Acton.. I benefited from my visiting scholar programme at Chicago-Kent College (David J. Gerber, supervisor). I thank Flavio Felice, David Gerber, Nicola Giocoli, Antonio Nicita and Giuseppe Niglia. All errors contained herein are mine.