Lol at topic. Why do this to yourself, TC? I know I've been gone for a while, but is posting a topic with false information still credible on this site?
How the hell are Sony the only ones who can afford Bungie; why leave out Microsoft (who has an extremely close relationship with Bungie and *still* has ongoing megaton projects for the X360, like Halo Waypoint for the dashboard and Reach, and w e all know how MS can be; they'll try hard to nab Bungie if they really cared to no matter what), or especially EA/Activision? Just to name a few..
This post sums it up nicely from another site:
"My thoughts are based on the “comfortable” relationship that “first parties” often enjoy with console makers. The tanking of the world economy seemed to really strain their announcement of wanting to break ties with MS. The R&D for consoles foreign to a “native” developer is costly and this fact seemed to result in making 2 more MS products; Halo Wars and ODST. I guess the timing was bad. I can’t avoid viewing this situation in a similar way to how I view an ex-girlfriend or boyfriend who contacts you after dumping you mostly because she/he realizes the grass is in fact NOT greener on the other side of the fence. Exorbitant costs for developing for the PS3 and the near nonexistent attach rate for the WII (and the “smaller than” attach rate of the PS3) make their decision dubious at best. I hope they are as good as their word, because if they make another 360 exclusive, they run risk of cleaning egg off their collective faces."
Proud Owner of: 
250gig FFXIII SE Xbox 360, 250gig Xbox 360 S, black Wii, 120gig PS3 Slim, soon to be 3DS *___*
