Earlier quoted context omitted.
This fine isn't about monopoly. But Google: - has required manufacturers to pre-install the Google Search app and browser app (Chrome), as a condition for licensing Google's app store (the Play Store); - made payments to certain large manufacturers and mobile network operators on condition that they exclusively pre-installed the Google Search app on their devices; and - has prevented manufacturers wishing to pre-inst…
- has prevented manufacturers wishing to pre-install Google apps from selling even a single smart mobile device running on alternative versions of Android that were not approved by Google (so-called "Android forks"). This is the most clearly anti-competitive practice.
Google supports AOSP and has done so for years, making it available freely. Why shouldn't they be able to dictate their own terms? If phone makers don't like it, they can make their own OS (which they have - and they all suck).