You call tablets PCs, but are they? A cheap Android tablet has more computing power than a PC had 5 years ago and does a lot more. For many people it replaces the PC as we know it. But given they don't run traditional x86 Windows applications, is it really a PC?
So from that perspective it's quite correct to call the end of the Windows PC era.
I totally agree Bert22306. At IC Insights we have classified tablets as PCs from the very beginning while other analysts called them media players, Internet access devices, etc. In fact we have always labeled this category as tablet PCs. As tablets become more powerful, offer detachable keyboards, etc., they are becoming more like traditional PCs. At the other end, we see traditional PCs like Ultrabooks offering the "thinness" of a tablet, touch-screen capability, etc., moving into the realm of features offered by tablets. Yes, today you may be able to differentiate between a tablet and a traditional PC, but two or three years from now, probably not. In our view, they are all PCs.
More nonsensical hype. Let me point out a couple of flaws in this consistent mantra.
The first one is, what are these guys classifying a Surface Pro? No doubt, they call it a tablet. But in fact, it's as much a PC as laptops are. And my constant refrain to this hysteria about PC sales is that unless we become a country of imbeciles, people will continue to need something like a PC, or a Surface Pro perhaps, which they rely on for actual productive work. Yes, including grade school children, these days.
My next comment would be, just like JLB911 points out, that sale of handheld gadgets will amost for sure be greater than sales of PCs. For the same reason that sales of any other household trinket is likely to be far greater than the sale of major kitchen appliances. They are different things. One does not negate the other.
Lastly, my prediction is that what we will see in the coming years are much more portable, perhaps even wearble, PC-like devices. Useful and optimized for a lot more than just consuming information or playing games.
Why do we even give credence to these wild projections? Three billion devices sold in 2017 to a world-wide population of 7 billion? Maybe my cat is buying one and I don't know it. Then they have 8 billion phones sold over a four year period, like people are going to replace their phone every year? This projection is total garbage.