Was it really services that got the Xbox in the living room... I don't think so, services where simply extras that you could use. What got the Xbox to homes was momentum aka if you wanna play games with your friends they had xbox's not ps3's, and it was gears, halo, then CoD.
Sony hasn't produced a "elite" multiplayer game. MS has 2, which if you look at Nintendo 2 is all it takes (Mario, and Zelda). The last thing you want from a game is to be ok buy utterly forgettable and that's Sony right now. So if you have friends and like multiplayer what are you going to do, play kill zone yawn, no your waiting for gears, and halo. Then you also get destiny and CoD.