For a long time, I have defended Microsoft's decisions. I have been a long time Gold member on their Xbox Live, and seen most of their decisions myself. However, this is the first time I'm going to have to disagree with Microsoft. Quire simply, they just want to continue charging people for DLC and games, without losing a profit. It's a sad day, I seriously wanted Steam on the 360. I'm not a Valve fanboy, and I love the amount of tears it's creating knowing Steam is no longer PC-only since now they have to share (now you know how it feels when our Xbox exclusives come to the PC, eh?! Nah just playing. Learn to share).
I sincerely hope Microsoft looks at this plan one last time and changes it. Everyone would be happy, and having Steam support on the 360 would be an interesting change.
PS: I've never used that symbol of the M and the dollar sign. But... how could you M$? Ew. No. Not doing that ever again. Though it still reinforces my dislike with this call.