Look at the controversy over the phone not booting with third-party fingerprint reader repairs as an example. People were upset when they found out that having their device worked on could make it unbootable, but Apple was able to easily fix it with a software update. If it had been designed more securely, it might have wiped data when it detected unauthorized modifications, which would have meant even more upset people. Now that this has become a public debate, there will be a very different response to making it more secure.
