Earlier quoted context omitted.
You think it's possible apple builds a new fab (they have none) and immediately jumps to better than TSMC 5nm?
fabs take years to build. The only real option Apple would have is some kind of joint venture with Intel and maybe try to bring in the US Department of Defense or US government in general to push the whole chip national security talking point and get more funding
This is a guaranteed route to introducing even more delays, cost overruns, schedule overruns, onerous requirements, intrusive oversight, and about a trillion meetings and studies along the way.
If you want to go fast, stay far far away from the USG.