[TheDong]

The iOS app store prohibits downloading code at runtime, excluding some very specific circumstances.

As long as the airport rules can be stored as data, not code, then iOS would be fine with pulling them.. but at that point you have a data blob saying effectively "in country X, you can use payment Y", and you still need code that knows "payment Y means enable this section of the app and use this library"... and you can't download that library at runtime on iOS.

So my guess is that the code implementing regional rules have to be bundled with the app due to apple's restrictions, and the associated data that could be dynamically downloaded is to small to not just bundle it too.