I honestly don't see any real benefits of Apple's lock-down approach compared to ChromeOS's lock-down approach. Users who want the full security of ChromeOS can use it as it ships and be happy, users who want to live on the wild side can fairly trivially (but with enough effort that they don't do it on accident) break the locks.. best of both worlds, user gets to decide how much they want to live in a locked box.

I don't disagree that there are benefits to the consistency of the Apple ecosystem versus that of Android, but all of those benefits are rooted in Google's lack of control of what phone vendors do with the OS (though they have been working to change that), not lack of control of users or app developers.. the entire jailbreaking ecosystem proves that such freedom doesn't harm the people who want the safe thing, it is just a shame they are forced to constantly fight against the phone vendor (on the Apple side) to keep things open whereas Google (usually -- they've been uncharacteristically dickish with Chromecast hardware) usually goes out of their way to allow the user to run free if they want to.