I'm not sure if I am understanding it well. Does the EU have an issue with Google Chrome coming pre-installed with Android? In that case, shouldn't Microsoft face the same penalties since IE/Edge comes pre-installed on the Windows OS? I believe that these pre-installed apps can't be uninstalled (because it might happen that you end up with no browsers on your phone), but would making the app uninstallable solve this…
The thinking behind this is that you can't have terms that prohibit competition when you are the monopoly. If you do, you need to accept competition. In a way it's because Google has been too successful in Europe. It'll be interesting to see how the EU thinks a fairer market can be obtained..