Elias Carroni University of Namur-Department of Economics   rempart de la vierge, 8 Numur, 5000 Belgium   elias.carroni@fundp.ac.be   https://www.fundp.ac.be/universite/personnes/page_view/01008191/           JEL Areas: L0 : Industrial Organization: General L1 : Market Structure, Firm Strategy, and Market Performance: General