Re: The PC was never even sick let alone dead.
The whole 'consumption device' thing is a bit of a vast oversimplification. Sure, there are the clear cases, like watching a movie or reading a book in bed is way better on a tablet... setting up a 3D animation scene is way better on a desktop.
But, the inbetween can be quite gray. If a doctor is using a tablet to input information during a patient visit, that might actually be far easier than having to roll over to, or sit at a desktop/laptop to do the same thing. And, that's not a clear-cut case of 'consumption' either.
And, as I said in one of my other posts, it's often more a matter of context that determins which is better suited, or even possible, for the same type of task.
Microsoft didn't fail at tablets for many years for lack of trying. The problem was that they were approaching the tablet like a more mobile laptop (and arguably still are). That simply isn't the case... and that's why they aren't going away (nor are desktops). It has little to do with computing power into a particular package size, though that certainly influences the possibilities.