South Korea's chip hub push, led by Samsung, SK, draws KRW896 trillion — and a market selloff

South Korea’s $585 billion semiconductor hub initiative—led by Samsung, SK, and Amkor—is less a proactive industrial leap than a reactive hedge against U.S. CHIPS Act strings and Japan’s export curbs. It will force rapid localization of EUV photoresists and advanced packaging materials, yet inflate compliance costs amid tightening U.S.-ROK data and export controls. TSMC and Taiwan, China suppliers face client diversification pressure, while SMIC may gain mature-node market share. If the cluster fails to crack sub-2nm yield within 18 months, the investment risks becoming a stranded asset; success, however, could redraw East Asia’s semiconductor geography and accelerate Japan’s and Vietnam’s supply chain de-risking strategies.