You can’t switch key caps. And it gets worse. The keyboard itself can’t simply be swapped out. You can’t even swap out the upper case containing the keyboard on its own. You also have to replace the glued-in battery, trackpad, and speakers at the same time. For Apple’s service team, the entire upper half of the laptop is a single component. That’s why Apple has been charging through the nose and taking forever on these repairs. And that’s why it’s such a big deal—for customers and for shareholders—that Apple is extending the warranty. It’s a damned expensive way to dust a laptop.
Apple’s profit on every machine that they warranty under this new program has been decimated. There is a real business impact caused by unrepairable product design. Samsung recently had a similar experience with the Note7. Yes, the battery problem was a manufacturing defect. But if the battery had been easy to replace, they could have recalled just the batteries instead of the entire phone. It was a $5 billion design mistake.