Donovan’s Deep Dives: TSMC’s overseas expansion is a necessity, not a choice - Taipei Times

TSMC's overseas fabs are not a strategic option but a structural displacement driven by geopolitical gravity. The real cost isn't capex—it's the fracture in technology cadence. 2nm yield ramp-up will lag 6-12 months at overseas sites, and the geographic separation of CoWoS packaging from wafer fabrication systematically inflates yield variance. Rebuilding ASML EUV deployment, specialty gas, and photoresist supply chains from scratch isn't relocation; it's ecosystem reconstruction. On compliance, CHIPS Act subsidies carry data-audit and capacity-priority clauses, effectively ceding partial manufacturing sovereignty to policymakers. Persistent EUV export controls ensure overseas lines trail node transitions by half a generation. Arizona's unit cost runs 30%+ above Taiwan, China, a premium ultimately absorbed by NVIDIA and Apple as dual-sourcing cost. The competitive window is open. Samsung's Taylor 2nm GAA, Intel's 18A foundry narrative, and Rapidus's aggressive timeline all target the capacity vacuum during TSMC's overseas ramp. Over the next 12-24 months, advanced nodes enter a dual-track regime: Taiwan, China secures node leadership while overseas sites secure market share. The battleground shifts from wafer manufacturing to advanced packaging and the geographic reallocation of the equipment ecosystem.