It has to be a foot in the door. If all they do is say apps have to do this, it’s ineffective at best. More than likely it’s dangerous because now you have built the gate and whoever comes after you can just hire the bouncer to stand in front of it (or rather contract it out to the cheapest shittiest companies imaginable). I can’t imagine this isn’t part of their plan because if wasn’t, you could still download an exe, MSI, deb, appimage, docker container, flatpack from anywhere and install it. Essentially the age game would do nothing except discourage use of the MS store, which is about the only good thing about it. :D