This essay is the last of a three-part series. Part one told the story of how Steve Jobs led Apple Inc. to the greatest market share story in modern history. Jobs used the “focus principle”: starting with the needs of the customer and working backward to the technology.

Part two described how Am Law 200 firms can recapture market power and take market share. By applying Jobs’ focus principle, firms can become best-in-class in a handful of practice areas and industries that fit the needs of the firm’s current and prospective clients.