I just think that if TSMC can find such PhD level employees in Taiwan, why couldn't other competitors find them in places way more abundant in those types of people? Convincing them is a matter of paying them more, there are plenty of highly educated physicians who work night shifts. And it's not like TSMC could hide this secret sauce either, so you would think that before dumping another 20 billion in a new investment, Intel would consider simply replicating what they could easily observe from TSMC.
I remember reading something that TMC has links with the local universities to train talent, and nearly guarantee them a job in the end... Ireland has an Intel Fab here, and I don't think there are many courses around here doing chip development... Mind you, not sure Intel Ireland does chip development, but could be wrong... they have something like 6k employees, god only knows what they are doing...