I don't know if it is sustainable man. Currently they have fabs in Asia and now EU and US wants their fabs in their locations too. Running a fab is not cheap, and honestly, I am not sure if the demand will continue to be hot in the long run. The last thing these fabs want is a lot of idle resources. In my opinion, US wants TSMC on their soil because they are worried that China may try and retake Taiwan and thus, impacting their chip supply. I am sure TSMC is very attractive to China now given their fabs have been nerfed big time by US, and neither do they have access to cutting edge nodes over at TSMC and Samsung.