Actually I have nothing against mental models that help non-IT people to make better informed decisions, but at the end of the day they are just models. But unfortunately in this case I agree with Nicholas Carr's comments:
"As its title suggests, it's one of those dry scholarly exercises in categorization that spend a lot of time explaining stuff that most managers understand intuitively."
Personally I've found more targeted models of greater use such as:
Richard Susskind's Grid for the legal industry; or
Evaristo and Munkvold's collaborative infrastructure model.
Still, I'm a consultant, so I won't throw out McAfee's ideas just yet...