Well, its not even about the install base TODAY. It's about what would happen to the install base AFTER the acquisition. CoD is played by HALF of the console playerbase. If Sony loses HALF of the 150 million, they are down to 75 million and if MS gains that Sony half, they literally switch places. Yes, Sony is first and MS is at third place TODAY but they switch places in one fell swoop.
Not to mention the fact that this would effectively nerf Sony's entire business. Assuming they lose 30% of their userbase, thats their entire profit margin. That means they would have to downscale their entire business. Which means fewer first party releases. Fewer third party exclusives. Fewer investment in consoles. We've seen what happened to Nintendo. They went from selling 150 million DS and 100 million Wiis to just selling 120 million Switches. A lost of 130 million units in just a little over 10 years. They literally had to bow out of the console business and their AAA output has been a shell of what it used to be. Zelda and Mario in 2017 were their last AAA games. They simply cant afford to release AAA games on a regular basis.
MS says they are in third place. No. Nintendo is a non factor. CoD hasnt been on Nintendo since Black Ops 2 in 2012. This is a battle for second place and the install base is 150+63 million which will completely switch the moment cod goes exclusive. There is so much deception in MS's comments, it's frustrating.
There's a guarantee on the table that should see COD on PlayStation for the entire generation at the very least.
So there's no immediate switch like yoir scaremongering post implies.
Also, less than 15% of the PlayStation userbase buys COD, so your theories of mass switching makes no sense.
Your Nintendo comments are extremely bizarre. This is by far the best performance for Nintendo first party in a long, long time. They've combined their handheld and console lines and while they're selling fewer combined units than the days of the Wii, they're absolutely killing it with software.