But is that the best course for Bungie? Many Halo fans are Bungie fans. Fans discuss still discuss Halo at length on Bungie.net, and many Halo fans will be getting Xbox One's for the Master Chief Collection, the last thing they need is to alienate long time Bungie, Xbox fans.
To make Destiny a hit, they need it to be success on all the platforms. That's the only way they can challenge leaders like Call of Duty, Battlefield, and the only way they can prevent exclusives from taking their fans away.
This holiday is really funny. You're going to have a Bungie/Activision game (Destiny), go up against former Bungie games of the past decade (halo CE, 2, 3 - part of the MCC) and also up against Activision with Call of Duty.
Sony probably does win out in this. Aside from killzone, they don't really have a shooter that it's strictly their own or has shooter fans buying their consoles for one and Destiny seems like it could be it for them.