Nvidia's Grip Is Slipping On June 12, TSMC's stock dropped 3.7% in a single session — not from a demand shock, but a water shortage in Hsinchu. One drought in Taiwan, and the entire AI supply chain blinked. That event crystallized what insiders have whispered for two years: Nvidia's 80% market share, built on CUDA's software lock-in and TSMC's near-monopoly on advanced packaging, is more fragile than anyone admits. Why it matters: Your cost structure as an AI founder depends on this semiconductor transition. Get it right, and you own a decade of compounding advantage. Get it wrong, and competitors run the same workloads at 60% less. TSMC's Hsinchu facilities consume ~63,000 tons of water per day — equal to 500,000 Taiwanese households. A prolonged drought could halt advanced chip packaging for weeks. This is a structural vulnerability the entire AI industry is built on. ==chart Factor | Current