Honestly, I'd rather see the focus on making it so we can transfer purchases across app stores/devices.
So many people get stuck with one manufacture because they baught some apps over the years and don't want to buy them again.
Even just making the stores talk to eachother would be enough. If I add my Google account to the Apple App Store, the app store can pull the list of purchased compatible software from the play store and sync it with my apple library.
Throw things like the xbox store and PlayStation store into the mix too. To be clear, that doesn't mean exclusives or incompatible things needs to be compatible, thats silly. But if I buy somethibg like cross- platform like BG3 on the PlayStation, I want to transfer that to the Xbox or PC if I change consoles.