re: 4 Reasons PC Market Won't Rebound
As I read this, I was reminded of some of the points Christensen made in "The Innovator's Dilemma" back in the early days of the Internet. Tablets and smartphones are no good for certain tasks which PC makers believe are important -- at least, initially. Listening to their customers, PC makers added larger, more beautiful displays; bigger hard disks, and disk+SSD combos; greater performance from their video cards. Along comes the disruptive innovation, the tablet, to address a different and as-yet-unmet need. Over time, the tablets improve and certain PC options begin to die off.
Perhaps the most important analogy - comparison with mainframes and servers. At one point, mainframes were the only game in town, and the PC revolution brought a new balance of power for doing business computing. At one point, desktop systems were the only game in town, and the tablet/smartphone revolution will bring a new balance of power for doing personal computing. I agree, Michael -- the high water mark has been reached, but PC systems will not fully disappear even as mainframes and multi-CPU servers have not fully disappeared.