> Summerlight's point was that if you take Apple's argument at face value (that iOS and the App Store are so tightly integrated as to be indivisible), then it boggles the mind that Apple could then turn around and sell you iOS (via an iPhone purchase) but not include the App Store in that same transaction.

I just don't see how your "then" follows from your "if" at all! The integration of iOS and the App Store is from a user's perspective. No one seriously believes that Apple is claiming that the two things are literally physically impossible to split up technically. You might as well be arguing that it boggles the mind for the calculator app to be free, but for iCloud storage to cost money!

> No one seriously believes that Apple is claiming that the two things are literally physically impossible to split up technically.

Except Apple in the court does. That is the exact stance why they cannot allow third party stores and browser engines since those are technically a part of indivisible OS services. Of course, this is obviously BS and inconsistent to many other Apple's business practice, anyway it's their official legal stance in nearly all of its antitrust lawsuits.

That's not true at all. They're not claiming they can't split it up technically. They're claiming that part of the end-to-end user experience is that users trust the App Store because Apple has oversight into the entire chain from downloading apps to the OS to taking payment information on their devices. If they have to open it up to other parties, then that chain of trust is broken.

I find that extremely hard to believe. Can you provide a source for this interpretation of Apple’s argument?