He had a very interesting presentation style and I would recommend that if you get a chance to see one his talks that you do.
The initial theme of his talk was about IT commoditisation, how today's cutting edge and hot topics are tomorrow's boredom. That software (and indeed anything) goes through a process from innovation, bespoke implementations, products and finally ubiquitous utility-like services. All business services exist somewhere on the curve from innovation through to commodity.
This lead him to ask the question of how this impacts IT. Well, in order for one to innovate in the first place then you need build on top of stable components. Without ubiquitous Internet access then one couldn't have a Google. So as we see ubiquitous services, such as Infrastructure as a Service, then we will see innovation that can build on that, such as Sales Force as Software as a Service.