TSMC: The World's Most Important Company Nobody Knows

TSMC manufactures 90%+ of the world's most advanced chips for Apple, NVIDIA, AMD, Qualcomm. $100B+ annual revenue from contract chip manufacturing alone. Never designs its own chips — only manufactures others' designs. This neutrality makes it trusted by competitors. Taiwan location is strength (concentrated ecosystem) and vulnerability (geopolitical risk). The $40B Arizona fab is the most expensive factory in history.