Commentary: Sanctions reshaped China's foundry sector — just not in the way markets expected

U.S. sanctions aimed to stall China’s advanced-node progress but inadvertently accelerated a self-reliant mature-node ecosystem. SMIC and Hua Hong’s focus on 55–28nm platforms not only meets AI edge demand for cost-efficient chips but also fast-tracks domestic EDA, equipment, and materials integration—triggering a cascading tech effect. While compliance costs rose 15–20%, higher localization has bolstered supply chain resilience. TSMC and UMC won’t retreat into mature nodes soon, yet SMIC is capturing ~30% of global >40nm orders via capacity scale and localized support. Within 18 months, Chinese foundries will shift from defense to offense, redefining global semiconductor division: advanced nodes remain Western-led, but pricing power and delivery agility in mature processes will tilt decisively eastward.