Micron has paused a Taiwan cleanroom since October amid labor dispute, but EUV orders stand

The Taoyuan cleanroom pause is not a labor story—it is a timing story with existential implications for Micron's HBM position. A two-to-three-month construction slip cascades through equipment installation, process qualification, and yield ramp, pushing first-wafer output back six to nine months. In the 1γ DRAM and HBM3E/HBM4 race, that gap is structurally unrecoverable. The "EUV orders stand" detail is more revealing than it appears. ASML's contractual lock-in renders Micron's capex irrevocable for twelve to eighteen months, yet production readiness remains hostage to local construction conditions in Taiwan, China. This "capital locked, schedule decoupled" risk mirrors the 2022 TSMC Arizona delay pattern. The competitive calculus is sharper: SK Hynix is already shipping HBM3E volume to NVIDIA; Samsung is in HBM3E qualification. If Micron slips two to three quarters, it forfeits the 2026 HBM4 design-win window for next-gen AI accelerators. That is not a share-loss scenario—it is an exclusion scenario. Twelve-to-twenty-four-month outlook: HBM supply tightness eases into near-balance by mid-2026. Without locked HBM4 customers by then, Micron's DRAM franchise reverts to commodity pricing, and its valuation anchor shifts from "AI memory" back to "cyclical semiconductor."