That is a good take. I do agree that you don't "need" Windows. I could do my work on OSX or Linux as an IT professional, but I have worked and the ease of use that I am accustomed to, makes Windows a default option. Most people won't want to learn several different PC OS's so I bet what works at the office is more than enough for home. And let's face it, no other platform really combines the ease of use for entertainment purposes and work as Windows does.
I am not a fan of Microsoft nor Windows (hence why I use OSX at home) but the inertia is there for businesses and people and they won't switch, at least not for the next decade. Predicting over that timeframe is pointless.
My point is that we have seen this prediction come and go with iOS, Android, OSX and Chrome OS many times before, and it never materialised, mainly because as far as cultural and economic impregnation goes, Windows is unrivalled.
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