Oh for goodness sakes, they control the freaking OS, efi, the whole kit and caboodle. When they were running intel nothing was stopping them from locking down the Mac iOS style.
This conspiracy theory that the Mac will get locked down has zero basis in reality, and is based on the notion that Apple is some snidely whiplash esque Saturday morning cartoon villain. Completely ignoring the fact that consumers have many options to buy machines, not just Macs.
This notion that the nefarious Tim Cook and the legion of doom are plotting, deep below the bowels of Apple HQ, to “trap” Mac users into the App Store doesn’t have basis in reality.
And yes, you would leave the platform. So would 99.99% of users. That’s what makes this theory fall apart, since now Apple is no longer selling any Macs, at all, period.
Which, even if we take this absurd scenario to its logical conclusion, what reason would Apple have to push the dastardly update onto the unsuspecting Mac user base, over just not making any more Macs? Just sell iOS devices, basically the same as a locked in Mac, and less costly than continuing to build computers with exactly the same functionality for zero people.