@INXISIV then why China or Vietnam can’t produce the highest level chips like Taiwan?Their wage are much cheater and they have more people than Taiwan.
The new fab in Kumamoto is a joint venture of TSMC and SONY. It's purely a business strategic decision as all companies in the world are pursuing for profits and interests. SONY and its acquired Renesas are all important clients for TSMC. As SONY intents to maintain its competitive advantage in car usage CMOS products in the world, it is crucial for SONY to have a strong local supply chain in Japan. Don't forget Japan itself is also one of key car makers in the world!! Where is the market demand where is the business!! ^_^