Valve: "Closed systems are bad! btw, here is our new closed system"
Gamers : "OMG YOU ARE SO RIGHT AND THIS ISNT AT ALL A CONTRADICTION HERE HAVE MY MONEY!"
*facepalm*
I'm not entirely sure that this is comparing apples to apples. Windows 8 is a general purpose platform that has been closed off such that to release apps that conform to their new UI you must be microsoft certified and go through their store.. which was gabe's complaint. As far as the closed system that is the steam box, the idea there is to just ensure that they have a working hardware configuration that would provide for a common user experience.
You can still take any game you make and distribute it without steam.
I don't think Steam users are exactly the kind who tends to spend little in hardware...I think that valve is unsure. A closed system would be most likely build upon a custom linux version, therefor the call for more linux games. To keep the hardware costs low, they will either need to stream or reduce the hardware, an other reason to push the indie scene (cross plattform + low hardware requirements).
If they just want to satisfy existing users, they don't need to change anything. I think they want to expand into the home-console market.I don't think Steam users are exactly the kind who tends to spend little in hardware...
Heh, it's nothing new. Each popculture prophet ends up like that. At first he's cool and everybody who's hip and happening loves him, and the next day he's one of really big fishes, says 'hey, making money ain't half bad', and starts milking the moneycow that users are. Most of faithful followers won't notice that transformation even if it would jump out of the bushes and kicked them in the butt.