But forget all that. The real reason the Windows 10 figure is so astonishing is because of the upgrades. Before this release, in-place upgrades were one of the most unreliable and scary things a user could attempt, and it was so bad very few Windows users ever did try it. With Windows 10, the vast majority of the initial 75 million users did in fact upgrade their PCs. And they did so successfully. That’s the 75 million.
Folks, that is a triumph, no matter what you think of the math. And Windows 10? We’re on course for this thing being the single most successful Windows launch of all time. There is no way to see it otherwise.