MediaTek, Marvell, Broadcom battle for ASIC supply through 2028

The real battlefield in the ASIC war isn't EDA—it's CoWoS packaging lines and HBM stacking capacity. Broadcom, anchored by Google's TPU multi-year commitment, has already secured advanced packaging slots at ASE and United Silicon in Taiwan, China through 2027. Marvell, tethered to Amazon's Trainium, is betting on priority HBM3E allocation from SK Hynix. MediaTek's structural weakness isn't design capability; it's the absence of an anchor customer to trigger long-term supply chain commitments. Without a five-year HBM procurement agreement, TSMC won't reserve SoIC capacity for you. On the compliance front, US export controls on bonding equipment have stretched CoWoS capacity expansion cycles from 18 to over 30 months. Packaging capacity for 2026-2028 is effectively pre-allocated; latecomers are left with scraps. Strategic read: Broadcom will extend into custom SerDes and full-stack IP to deepen customer lock-in. Marvell will accelerate HBM interface IP acquisitions to build moats. MediaTek, if it fails to secure a hyperscaler's three-year contract within 12 months, gets pushed out of the first tier. The 12-24 month tail effect: ASIC customers will abandon multi-sourcing in favor of single-source deep binding—capacity scarcity makes diversified procurement economically irrational. The ultimate winners won't be the design houses; they'll be the packaging and memory fabs that control CoWoS and HBM supply.