[Bobylonian]

Android is supported by others as well - it is not effort of Google only...

Yes, it is true, that there are other stores - like Samsung has it's own store on Android, so technically there is a choice of stores. Apparently Google would not fight store wars with the producers of hardware... but there is nothing that prevents them to disable any other stores by any other means - by simply sabotaging their app.

The issue here with Google Play is that it assumes, that Google Play has monopoly of money transactions for that publisher outside of Play store, even if the app has a choice to receive money through oher means - crypto, Paypal or cards. Same issue is with Apple store - they did not wanted to allow to transact money in Epic store(and wanted their cut on those), where you could make transactions in the Epic website from your card.