As I mentioned in another comment, what if, after completing this acquisition, MS decided to raise the price of CoD to $100,000 per player per year? Would this really harm consumers? Would people really be forced to sell their homes and kidneys?

Of course not. They'd just play another game, or watch a movie or something.

If someone wants to play video games, they can do it for free on archive.org, and all they need is a web browser.