Interesting viewpoint – it makes a lot of sense that the tablet and mobile will converge to a single device. But what about the PC? Will that continue for the foreseeable future, albeit with a shrinking market share? There will be things that you just can’t do on a converged mobile/tablet device for many years to come.
Maybe the post-PC world is actually just a step-change in the rate of decline of the PC, and not a trend that will continue. Maybe the post-PC world is also a post-tablet and post-mobile world, where all the neat device classes we’ve seen develop over the last 20 years will be swept aside?