Haha, you Slashdot freedom fighters are so funny. Do you have any idea why Valve was so popular in the first place? It's because they could sell games on Windows, and the games just magically keep on working through the years, from XP => Vista => 7 => 8. And all this thanks to Microsoft, not Valve.
What drivel. No wonder you ACd. Microsoft sell a platform, Valve had a enterprising idea 10 years ago that used the platform and it's been a success. Now Microsoft want to get into Appstores, in typical "me too" Microsoft fashion. This is a threat to Valve's business and so like a responsible company head, Newell is working on a plan B, in case MS decide to make it much harder for Steam to exist on Windows.
And how much did Valve pay Microsoft for all those sold games on Microsoft's platform? Not a goddamn cent. There's no appstore.
Microsoft got paid through Windows sales, it is in their interests to make that platform appealing. They even took the piss by forcing newer Windows releases on gamers using arbitrary restrictions. Do Adobe pay Microsoft every time someone buys Photoshop?
And the REAL irony? Now Valve wants to sell their own app store to Linux gamers
I don't think you know what irony means. And what's the RRP on SteamOS?