1. The Innovator's Dilemma is a classic text by Clayton Christensen about the difficulty established companies have with disruptive innovation. Along with its sequel, The Innovator's Solution, it lays out specific suggestions for how established companies can create autonomous divisions to pursue startup-like innovation. These specific structural prerequisites are discussed in detail in Chapter 12.
2. For more about SnapTax, see http://blog.turbotax.intuit.com/turbotax-press-releases/taxes-on-your-mobile-phone-it%E2%80%99s-a-snap/01142011-4865 and http://mobilized.allthingsd.com/20110204/exclusive-intuit-sees-more-than-350000-downloads-for-snaptax-its-smartphone-tax-filing-app/
3. Most information relating to Intuit and SnapTax comes from private interviews with Intuit management and employees. Information about Intuit's founding comes from Suzanne Taylor and Kathy Schroeder's Inside Intuit: How the Makers of Quicken Beat Microsoft and Revolutionized an Entire Industry (Cambridge, Mass.: Harvard Business Press, 2003).