"In our 2006 book Wikinomics, Anthony D. Williams and I looked at dozens of companies that have used the Internet to transform their business models and achieve tremendous success.
However, in the five years since the book’s publication, we’ve noticed something striking: the rate of business model innovation has not accelerated. Yes, some individual companies have achieved competitive advantage by exploiting the web and networked business models. But overall the gains have been modest.
We’re beginning to understand the reason. Increasingly it’s becoming difficult or even impossible for companies to achieve breakthrough success without changing their entire industry’s modus operandi"
He then proceeds to analyze opportunities in 5 industries - definitely a brain twister if likely a "grand challenge" in many of those sectors.