Both of my sisters and both of my parents use computers mostly for browsing, reading/writing mail, Youtube, Facebook and online banking. Most of their friends (and most of mine) have similar usage patterns. All these people really need is a screen of some sort (smart-TV, smartphone, tablet, convertible/hybrid, etc.) with keyboard, they do not need a conventional PC.
This is where PC/laptop sales are going to hurt most: non-gamer non-professional PC users realizing that they can now do just about everything they used their PCs for on a $200 tablet and smartphone/tablet computing should get much better with new/upcoming products featuring 2GB RAM.