The latest Windows 11 preview build in the Beta Channel delivers a rather odd change to the Start menu. For some reason, the "Sign out" button is hidden behind a Microsoft 365 ad and other banners.
I feel like they go through cycles of "hey, we just remembered we have de-facto monopolistic power, what are we doing with that? Let's do stuff with that" And "everyone got mad at us for anticompetitive practices again... Let's lay low and play nice until governments stop threatening to break us up"
Turns out you can make more money by reducing usability and user choice in an entrenched product because hardly anyone will baulk and jump ship to a different product.