[wildredkraut]

I don’t think they will be out of scope, because they all uses the same AppleID backend and users can cross login with the same AppleID everywhere. To be out of scope, Apple would have to block iOS AppleIDs and iOS purchases from working on the other gadgets and stores.

[threeseed]

They share the same AppleID backend.

But users don't have to use the same login for each store.