Is Valve pushing Microsoft out of PC gaming?

The short answer is “Yes”. The longer answer is, “Yes, definitely”.

First there was SteamOS, a Linux-based operating system whose open design aims to spur innovation. Then there were Steam Machines, a range of Valve-branded systems with SteamOS pre-installed that will provide a legitimate non-Windows alternative for PC gamers come 2014. Now, Valve has concluded its trio of announcements with a joystick-less Steam controller, a bizarre-looking (but admirably forward-thinking) input device that allows any Steam game to be played wirelessly from the comfort of your couch.