Because Microsoft doesn't have a monopoly on Gaming.
Nintendo and Sony hold huge shares. Steam owns a large percentage of games sales on PCs.
And iOS and Android gaming combined are bigger than PC and console gaming.
Other businesses besides gaming, I don't know. I know Microsoft does not have a monopoly on gaming.
However, I do think that them buying up large game studios will ultimately be bad for consumers. They're swinging money left and right to try to become a monopoly.
It seems it's still all fun and games made by individuals in some basement.
Until the content of a specific game is offending someone, then it's suddenly a political issue until that one game is gone.
Would be good to have a serious political discussion not only about the dopamine machine social media, but also about the millions of "cow clicker" games and how also those may impact on youth and the nation as a whole...
Instead of discovering talented studios, (more or less) carefully curate and support them until the eventual point of acquisition (like Sony does IMO), or focusing on finding talented individuals to scale your in-house R&D (like Nintendo does IMO), Microsoft's strategy is to buy entire machines which create games proven to be commercially successful.
The downside to this is that those large studios Microsoft buys are currently complementing the in-house portfolio of all console-makers.
If those studios at one point stop serving all platforms for some strategic reasons of their parent company, many of the games they offer today might not be economic anymore and would end up not being developed.
I wonder how such a move would impact the variety of games available today...