I have to disagree with this gentleman. I think that smaller devices will become popular, and that category will grow. But I think there's a different set of people who don't care for communicating on cell-phone size gadgets (can you say amblyopia?) and, also, kids who will find a netbook exetremely useful.
Popularity of tiny netbooks set to rise in 2009 - Tech and gadgets- msnbc.com: "But in the long run, some analysts — Baker included — are skeptical about the netbook category's life span. Baker believes netbooks could fade out next year, and be replaced by even smaller devices that are also focused on getting their owners on the Internet."