What cheek
"[Apple] insisted that local carriers foot the bill for advertising and fixing under-warranty iThings "
What nerve. If the iThings are under warranty, they are your responsibility, Apple, and no one else's. I am frankly appaled at the idea that the carriers didn't tell Cupertino to stuff it, accompanied by a vast ad campaign telling the public what Apple had demanded and why they had refused.
Public opinion can be useful. I doubt very much that South Koreans would have appreciated that Apple was trying to force someone else to bear the costs of Apple's warranty.