Sometime around Windows 8 Microsoft started making noises about closing the Windows ecosystem and making people buy software through their store. This would have shut things like Steam out, so Valve said “Okay, we’re going to make a Linux-based gaming platform, because we think gamers will follow us and not you. Also we’re going to create console-like gaming PCs called Steam Machines and make our own controller, because we think we can win against Xbox, too.” Microsoft didn’t lock down the platform, Steam Machines didn’t really go anywhere, but it laid a lot of the groundwork for the Steam Deck.