I imagine that they don’t care for the small segment of users that can install another OS. Even if they stay at Windows we probably hamper and sabotage the telemetry/adware parts of the OS and become less profitable.

When looking at their Q4 earnings the Windows and Devices and Advertisement revenue should be high enough to warrant some effort. That effort is probably to increase the Advertisement revenue though.
https://www.microsoft.com/en-us/investor/earnings/fy-2025-q4/segment-revenues