Does Interdependency Affect Industry Profitability? An Empirical Test MICHAEL J. LENOX Fuqua School of Business Duke University PO Box 90210 Durham, NC 27708 Tel: (919) 660-8025 Fax: (919) 681-6244 mlenox@duke.edu SCOTT F. ROCKART Fuqua School of Business Duke University PO Box 90210 Durham, NC 27708 Tel: (919) 660-7998 Fax: (919) 681-6244 srockart@duke.edu ARIE Y. LEWIN Fuqua School of Business Duke University PO Box 90210 Durham, NC 27708 Tel: (919) 660-7832 Fax: (919) 681-6244 ayl3@duke.edu Draft date: June 29, 2007 DRAFT Please do not quote or cite without authors’ permission.