I think the author was refering to what the majority of the Computer Users use their Computer for... email, browsing the web, being a Twit, using Facebook, My Space, etc... For this, the Smart Phone gives a lot of bang for the buck....

The Desktop needs for design and product development, Accounting, etc... will not change, but these uses have not really changed much in the past five years. The big influx of users has been in the Social Users, and for this, you do not need a Desktop, Laptop, or even a Netbook.

ratscloset
aka John