MS has about $70bn cash, so truthfully they're the only company up that can afford to buy it that actually has something to gain from buying it. I'm sure google and apple don't want anything to do with it. Anyway, if MS does buy it they should give CoD a release on X360/720 a week before it becomes available on PS3/4. This would be much more beneficial than making CoD an X360/720 exclusive as they wouldnt lose out on any sales and instead there would be a gradual hardware marketshare shift as PS3/4 CoD gamers would slowly switch to owning X360/720's. Overall, due to this, I think it would be a smart thing for MS to buy this, but they need to negotiate the price downwards a little first.
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right
