AI demand points to tighter capacity, higher prices at Taiwanese foundry service Vanguard

The real story isn't a quarterly utilization figure—it's a structural scissors gap. Global 8-inch wafer capacity is in secular decline as TSMC, UMC, and GlobalFoundries systematically retire lines (net 5-7% annual reduction), while AI data center power density scales from 3kW to 10kW+ per server, tripling PMIC and power-component content per unit. This scarcity is reshaping the power semiconductor value chain. IDM players like Infineon and ST gain a widening moat as fabless designers face 15-25% foundry premiums and compressed access to SiC/GaN driver chip capacity. The 8-inch node is becoming a strategic bottleneck, not a commodity. Competitive response will be structurally slow: UMC and GF may announce expansions in 2H26, but 18-24-month equipment lead times cap supply elasticity. Meanwhile, supply-chain diversification away from concentrated Taiwan, China capacity is inflating landed costs for North American and European buyers. 12-24 month outlook: expect a 2021-style memory pricing cycle, but longer—AI infrastructure capex runs through 2028. Power semiconductors are being repriced from commodity to strategic asset, and pricing power is irreversibly migrating to capacity holders. The long tail of this shortage will outlast most market expectations.