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
If Linux becomes a lot more reliable in the future, it'll be an "hey hi" miracle. If Linux becomes a lot less reliable in the future, we'll know why and who is responsible for it.