Microsoft should be delighted then that they can force Internet Explorer on everyone again.
> They are clearly related as a suite of applications which form the core experience of what is called “Android”.
That argument doesn't hold for Chrome. The core experience of Android is the AOSP browser (aka Android Browser). Later Google started to use their monopoly to force the inclusion of Chrome alongside Android Browser, followed by the removal of Android Browser in Android 4.4.
And even now, the only reason Chrome is part of the "core android experience" is because Google pushes hard to make it that way. There are plenty of other good mobile browsers.
>These are all essential components of one product — a mobile OS
But Google doesn't licence the OS. They donated the OS to Open Source, and use their licencing agreement for the App store to control unrelated parts of the OS experience