alt Hacker NewsThe Tn chip.
Prior to that, modern Macs were just PCs. Then Apple started to introduce, and then depend upon, their unique hardware.
Then the ARM migration using proprietary CPUs and GPUs really kicked it up a level. The OS relies on the hardware, which is unique to Apple now.
It seems so weird that the M series are really SOCs and not just CPUs. I also don't really want a home computer to have coprocessors just for machine learning...
At least they always allow installing your own arbitrary OS.