This document discusses Apple, Google, and Microsoft's battle for dominance in the mobile computing experience. It provides an overview of each company's business model and strengths. Apple focuses on proprietary hardware and tightly controlled software. Google's model centers around online advertising and open platforms. Microsoft has historically focused on Windows and Office but is expanding into mobile hardware and software. The document examines why mobile is important to these firms and evaluates their mobile platform offerings. It discusses the significance of mobile apps, app stores, and open vs closed platforms. The author argues Google's business model and focus on apps will allow it to prevail, though it faces challenges from Apple's brand strength and Microsoft's enterprise relationships. The document considers the implications of one company dominating