How would you "leave" a product that you have already paid money for? They'll just avoid buying stuff like that in the future. Leaving is for services.
Windows 8 is an utter disaster. I'm pretty sure that explosive Macbook growth at the time was fueled by this (and Vista). Today, Windows is for miserable people who can't afford anything better. This is understood by consumers. This is also understood by hardware makers. It takes two strikes to ruin product's reputation.