South Korea's southwest chip hub plan faces supplier gap

South Korea’s $51 billion memory hub in Hannam reveals a critical 'hollow core': the absence of a local ecosystem for advanced materials and equipment. Technically, this forces Samsung and SK Hynix into prolonged reliance on imports from Japan, the U.S., and Taiwan, China—especially for EUV photoresists and ultra-pure gases—creating latent supply chokepoints. Geopolitical friction could turn this cluster into the weakest link in Korea’s semiconductor chain. Competitors like TSMC may accelerate mature-node expansions in the U.S. and Japan to capture risk-averse clients, while Japanese suppliers such as Tokyo Electron and Shin-Etsu could leverage pricing power. Unless Seoul rapidly incentivizes Tier-2 vendors through tax breaks and infrastructure within 18 months, the project risks becoming a 'fab island'—high in output but low in true supply-chain sovereignty.