The oil industry holds relatively few surprises for strategists. Things change, of course, sometimes dramatically, but in relatively predictable ways. Planners know, for instance, that global supply will rise and fall as geopolitical forces play out and new resources are discovered and exploited. They know that demand will rise and fall with incomes, GDPs, weather conditions, and the like. Because these factors are outside companies’ and their competitors’ control and barriers to entry are so high, no one is really in a position to change the game much. A company carefully marshals its unique capabilities and resources to stake out and defend its competitive position in this fairly stable firmament.

A version of this article appeared in the September 2012 issue of Harvard Business Review.