Legacy Windows Desktop PC under threat
At work we dock our Windows laptops into a docking station to get a decent mouse, keyboard and screen, and a power supply for the short-lived battery, on health and safety grounds.
However, I could do the same with my smartphone instead, and throw away my laptop.
In the short term I would use a Citrix session delivered to the attached screen to get the legacy Windows applications. In the longer term, I could run a full size browser to access the Cloud applications that will gradually replace them.
Then I can carry my 4oz PC in my pocket and use it as a smartphone when away from my desk, but use it as my mouse, keyboard and screen "PC" when docked at my desk to run my desktop applications on a large screen.
Most line of business apps will run happily through a browser today anyway, even though they are not yet Cloud-based. As as applications migrate to the Cloud, this will make the phone plus docking station plus browser the standard way to access all desktop applications that need mouse keyboard and screen. So the Windows desktop market does have a big threat hanging over it, and contrary to your rather old fashioned view, it may start a rapid decline within the next 36 months.
Peak Windows PC sales were 2011 when they averaged 90 million a quarter.
The quarterly PC sales mentioned in the article were 74 million, but 4 million of those were Apple Macs, and some were Chromebooks, so the Windows PC sales would be around 69 million.
Quite a drop from 90 million I would say. And that is before the effect that I am talking about starts to kick in.