Google created the opportunity for "markets" of android alternative app stores and alternative in-app payments, but then leveraged their control of other areas

Google created the opportunity for "markets" of android alternative app stores and alternative in-app payments, but then leveraged their control of other areas (such as OEM distribution of android and play services, revenue sharing, marketing) to squash competition in these areas. Apple on the other hand has tried very hard to make sure such perceptions of markets do not exist; for instance, the requirements they gave to Microsoft for shipping a game subscription service on iOS is that the games themselves had to be in Apple's App Store, pass App Store review, and take payments for DLC or currency via in-app purchase. This is also IMO why Apple will never actually lock down macOS so that things are only available in the Mac App Store. Whether or not it is a good idea, they can't defend it legally.