Apple has been launching the "M1" piece by piece for years now. They started with Qualcomm/PowerVR cores and ended up with custom designs over years of iterativ

Apple has been launching the "M1" piece by piece for years now. They started with Qualcomm/PowerVR cores and ended up with custom designs over years of iterative product launches. I have no idea why do you think M1 is such a green field effort when it obviously shares so much of it's design with A series SoCs you've been seeing in your favorite iDevice.