I hope that SteamOS finds more of its way into desktop computers. Sure, I don't trust Valve; just like I don't trust any other corporation. But it's like fighting a big cancer with a smaller meta-cancer, if they hurt Windows/Microsoft I'm happy.
Plus its current relationship with GNU/Linux is symbiotic.
This is a dumb headline and a dumb article. Valve is making ripples in handhelds, yes, but to say the same on PC is moot. Microsoft still has an iron grip on a large amount of PCs. There's so few that will bother with SteamOS as OS of choice since it is a one-trick pony compared to Windows, even though it is shit right now. They still need Windows to run nearly 99% of games.