That’s an interesting point I hadn’t thought of. I suspect there are a number of functions and features that are monetised through the App Store commission that will need to be separately charged for for apps that pay a commission to a different App Store. I suspect the charging structure is going to get a lot more complex (and expensive) to administer.The point being - some other App Store charges 10%. Apple will not include free Maps, storage, beta support, or whatever to your app. That is what I meant by determining if the fee is worth it. It's bundled today because there has been no need to separate it. IF third-party stares are ultimately required, you can bet that there will be a schedule of mandatory and optional Apple-fees to be paid on top of whatever fees are paid to the other store.