Draw the line for Apple silicon? With Jobs. I'm not sure what was unclear about my previous post. Jobs introduced Apple silicon. That's my logic. Jobs began the SoC design for iPhones and he began the high performance CPU initiative with the purchase of PA Semi. That's my logic.

Putting their CPUs in laptops wasn't an incredible initiative from Cook either, it was basically an inevitability that mobile class cores would eventually intercept high end CPUs for performance after Dennard scaling ended, and it was widely predicted by many Apple watchers even before their own core came out, but particularly after the first ones came out.

Some thought it would be sooner, some later. If Intel hadn't shat the bed for a decade, and/or if the PA Semi team and subsequent Apple CPU team turned out to be in the Samsung or Annapurna tier, then it might have taken many more years, or they might have switched over to an ARM Ltd core IP. But the trajectory for how things turned out was set in motion squarely by Jobs. Who brought up the CPU group and introduced the first high performance Apple CPU silicon.