THEORY IN STRATEGIC MANAGEMENT RICHARD A. BETTIS,* ALFONSO GAMBARDELLA,2 CONSTANCE HELFAT,3 and WILL MITCHELL4,5 1 Strategy and Entrepreneurship Department, Kenan-Flagler Business School, University of North Carolina, Chapel Hill, North Carolina, U.S.A. 2 Department of Management and Technology, CRIOS, Bocconi University, Milan, Italy 3 Tuck School of Business, Dartmouth College, Hanover, New H...