Moats are great for investors, as they defend the value of the company. But it removes a very important market signal for said company.
Now Microsoft doesn't seem to understand what is an operating system anymore because it has so many clients and so many use cases, and the people using Windows can't jump overboard easily. Thet have no clue if what they are doing is right or wrong, useful or useless.
They just add stuff, especially of the latest trend/fad (be it tiles, 3d or lately AI) and copy whatever they think will sell (mobile phones, Apple...). Or course, since a large part of its users are not very bright and can't be trusted, all this software is half assed and become rapidly useless (because those who really need it will invest in non-half assed, pro or semi-pro versions).
So I expect the slow degradation of Windows to continue unabatted.
Paint 3D is just another mark on the way to complete crappitude.