The AI Industry’s Silent Chokepoint: InP Substrates Warning: The entire AI industry is quietly bottlenecked by just two companies: AXTI (~USD $908M market cap) $AXT Inc(AXTI)$ SMTOY (~USD $31.8B market cap) $Sumitomo Electric Industries Ltd.(SMTOY)$ Together, they control 60–70%+ of the world’s Indium Phosphide (InP) substrates. This matters because the next generation of AI infrastructure—NVIDIA GPUs, Google TPU v7 pods, Meta, Microsoft, and Amazon hyperscaler clusters—depends on InP-based lasers and receivers. Companies like Broadcom, Lumentum, and Coherent rely on InP substrates for: $COHERENT(COHR)$