Android (Linux) + ChromeOS (Gentoo-based OS) + GNU/Linux at around 50% combined
Summary: Even though Android does not mean freedom, it's noteworthy that Microsoft's share in operating systems (common carrier) decreases rapidly, weakening the company's position in the market
From what we've seen, this wave was more than 3% (a lot more) and the next wave/s will be even bigger (possible as imminent as weeks from now), based on insider leaks
Only if you are servicing (being a slave to) proprietary forges that Microsoft and the NSA control while violating the GPL will Canonical give you money