I know they made the Bethesda games first party only, I was pretty sure they would, but I actually could see them keeping CoD multiplat. It's not because they can't afford to leave money on the table, but because it makes Gamepass look like an even crazier value proposition if subscribers get the base game for free while everyone else has to pony up $60-70 for one title.
Well it would still be available outside of Game Pass for that price.
The bigger reason is that COD is similar to Minecraft's level. It is a huge title and whilst it is money on the table, the likelihood for keeping Minecraft on all platforms and also continuing to release add-ons and spin-offs like Minecraft Dungeons on all platforms is that you don't want to piss kids off. They throw tantrums. Now think about your stereotypical COD player - yep, a tantrum throwing kid-like-adult.
You want to make the user switch to you, what you don't want to do is piss them off in the process. We've seen multiple times how angry the COD community gets over simple marketing deals switching hands, exclusivity will be orders of magnitude worse.
Remember as well Phil always talks about the long game with Game Pass. I think what you're more likely to see is COD remaining on all platforms for the next couple of years, but over that time the experience via Game Pass will become superior. That means exclusive double XP events, in game content and so on, increasing over time until the other platforms are left with the base game only - in other words letting people down gently. You see this degradation approach all the time in business and once you've devalued the product enough it becomes much easier to withdraw it.
Let me get this clear.
You think that after agreeing a sum of money for a purchase, one party can do stuff to reduce the value of the purchased item during the waiting period?
It’s like you asking if Bobby can sell off the COD IP to Tencent while waiting for the deal to close.
There could be an extension clause in the contract that gives Sony the right to extend it or first right of refusals etc, so it could be feasible, we'll never know. But just as equally there could be a break-up clause, ie. Activision can pay Sony $x to quit the deal early.