Wintel has already lost teenagers, grandparents, and all those who use computers just for email and facebook. They have switched to phones, tablets, and now some of them to Chromebooks. If Chromebooks weren't around, they still wouldn't be buying Wintel, but Android or iOS.
But...corporate America is still solidly entrenched, and they are just now moving on from Windows XP to Windows 7. In 10 years or so, when Windows 7 is as old as XP is now, That's when they will start to think about where to go next, and whatever it is, that option isn't around yet. So we'll see!