Microsoft is losing Builders fast. They’re switching to MacOS and Linux. The biggest pull keeping people on Windows, outside of shear inertia, is content creation and gaming. However, even these are falling to Linux.
Without Builders, you don’t have software, and without software, you don’t have users. This is why Microsoft needs Windows Lite.
.net (core) is a mature framework and collection of great languages that work really well, perform really well, and is truly cross platform and open source. It’s the best thing Microsoft offers.