Of course Microsoft is planning to make Activision/Blizzard titles exclusive to their ecosystem, they'd be stupid not to. I hate exclusives, I wish every game was available on every platform. However, exclusives sell systems, that's just how it is. Sony knows that better than anyone, that's how they've beaten Microsoft 3 straight generations and counting.
I don't personally care one bit whether this sale goes through or not. I haven't cared about a Blizzard game since Diablo 2 and I haven't cared about an Activision game since... ... ... /scratches head ... Interstate '76(?) I mean, I know CoD is a big deal, but I don't play CoD, nor do I have any plans on starting, so whatever.