Hyperscalers commit $650B+ to AI infrastructure buildouts (arms race)

Google, AWS, Meta, Microsoft and others planning >$650B AI infra investment. Nvidia GTC amplifies demand for accelerators/runtimes; niches emerge for cooling/power startups and DePIN compute (Ocean Orchestrator) as alternatives. New startup raises (Zyphra $500M, Modal $355M) reinforce the infra scaling trend. New signal: NVIDIA invests $2B in Marvell for NVLink Fusion and silicon photonics, deepening AI infrastructure integration.