In Taiwan, for instance, the working age population peaked just five years ago[1], so I doubt that the fact that their worker shortage is permanent and going to get worse has yet sunk in the brains of the management and political class in Taiwan.
Give it ten years, they might start understanding what's going on. Based on China's and Japan's responses, they'll have no idea what to do.
1. https://population.un.org/wpp/Graphs/Probabilistic/POP/20-64...
It is akin to assuming that you can import soil after you have depleted your own. Human ecology matters as much as soil ecology does.
I want sustainable to be sustainable. Responsible societies should be able to maintain and improve the people that they have. Any people imported should be a supplementary augmentation, calculated for sustainable growth and improvement of the society as a whole. An augmentation, a supplement, is very different from a replacement. A replacement is what happens when you have the irresponsible depletion of human capital, and frankly, any immigrant should not want to go to a place where human capital is unsustainably depleted in such a way, as their own offspring are likely to receive the same treatment.
The issue is that the Asian work culture in the tech industry is not sustainable, as seen from their demographic replacement rates. They are burning too hot and the culture will change or they will disappear.