Absolutely it is but it's not just to shut down the few hackintosh users although that'd be an welcome consequence. It's only because they still have not figur

Absolutely it is but it's not just to shut down the few hackintosh users although that'd be an welcome consequence. It's only because they still have not figured out how the locked down macOS will work that they have not announced anything so far. Download apps only from Mac App Store, make it easy for people 100% in Apple ecosystem to do what they need to do (XCode, browsing, store apps, multi tasking) and they're good to go. They already charge premium for the hardware - not having to pay Intel will fatten the margins, with app store revenue and maybe banning 3rd party browsing engines they can get exactly what they have always wanted and so long as they provide people with some macOS features - terminal access (even if controlled) and multitasking etc. - people in the Apple ecosystem aren't going to care. Of course it maybe gradual and it maybe not so restrictive - they may allow 3rd party app installations and make it harder like they have already done in a way.