Microsoft may have sold 100 million licenses of Windows 8, but this doesn't mean that those licenses are all installed onto consumers' PCs. ComputerWorld talked with Patrick Moorhead, a principal analyst with Moor Insights & Strategy, who estimates that the actual number of Windows 8 devices being used is closer to 59 million.
This is according to the most recent data from Net Applications shows that Windows 8 is being used on around 4.2% of all Windows PCs. There are over 70 million PCs in the wild still running Windows Vista, which is a number that needs to change.