If they cared about control, they wouldn't depend on Windows ecosystem, rather foster GNU/Linux native games.

Everyone is quite curious what Microsoft will drop at CES 2025, and which OEMs will be on their side, it is going to be netbooks all over again.

They are literally fostering Linux games by selling and endorsing a platform where those games would be native as well as having native releases of their own games. They aren't gonna force any third-party devs to do the same, but they're showing that there is a market while also growing it.