On the one hand the article is the typical US-centric nonsense. Anybody who's actually observed how the "other 7.3 billion live" would grasp very well that not only are we Post-PC but that on a deeper level there never really was a PC era. The PC was a kind of aberration, a 40-year blip, an unfortunate accident that only arose due to a bizarre confluence of events like disco music and Texas.

Global corporations like Google and Microsoft are relentless mobile-driven because they don't have luxury of naively focusing on a single market. And when you look at all the fastest growing tech companies in the world, from Instagram to Wechat to gaming, what you are seeing is a landscape where virtually all speculative capital is invested in mobiles.

That said, the PC as a platform is seriously under-utilized. The PC could be so much more but, rationally, nobody is ever going to invest in a powerful PC if all they need to do is run chat and watch videos and fill out forms. This is the irony at the heart of the growing division between the technology masters and those who serve technology: the people who create the powerful mobile platforms and ever-more sophisticated algorithms are all using PCs.