The acknowledgments are many, from the companies that I have worked with and learned from to the generosity of thought shared by those cited and footnoted throughout. The Kenan-Flagler Summer Research Fund at the University of North Carolina at Chapel Hill and their generous donors supported much of the time devoted to this research. The Yale faculty, particularly Jeff Sonnenfeld and his uniquely Jeff Yale CEO Summits, have inspired me to think over the years. Most importantly, none of this could have happened were it not for my family, who indulged my long trips and far too many ramblings on strategic control!