the fab process is their for grabs not by accident, they made the right call to invest in a longterm relationship with tsmc long time ago, so they have dibs on

the fab process is their for grabs not by accident, they made the right call to invest in a longterm relationship with tsmc long time ago, so they have dibs on all cutting edge tech. un-upgradable SoC is a strategic design choice so which is basically part of the third reason which is their responsibility as you pointed out. So basically their success with m1,m2, etc is a well done implementation of a very ambitious strategy to disrupt the market. I don't see why it should be disputed.