Fail to be outraged
Personally I think that the biggest problem has been the secret contracts that Google was able to force on companies. This is very similar to the discounts Microsoft offered to PC makers if Windows was installed on every machine: the discount was paid for by effectively eliminating the competition.
I don't expect the ruling to change the world overnight but I do expect improvements, including alternative app stores, over time.
Things that still need looking at by regulators:
- timely release of security updates and strict liability otherwise
- Google's T&Cs for GMS
- Apple's T&Cs for developers including synthetic product restrictions