⚠ Know-How Can Leak, and Talent Can MoveModerate threat

A moat built on tacit human know-how carries a human vulnerability: knowledge can leak, and experienced people can be recruited away. Rivals and governments eager to build competing leading-edge capability have every incentive to poach TSMC's engineers and to learn from its methods, and the very expansion into overseas fabs — Arizona, Japan — necessarily spreads TSMC's manufacturing expertise beyond Taiwan, training new workforces and, at the margin, diffusing some of the know-how that has been concentrated on the island. The learning curve is hard to transfer, but not perfectly sealed.

The reassurance is that no individual, or even a group, holds enough of the vast, distributed, organization-wide learning to recreate TSMC's manufacturing machine elsewhere — the whole point of a decades-deep learning curve is that it lives in the collective, not in any transferable file or transferable person. TSMC also guards its know-how fiercely and keeps its most advanced work concentrated in Taiwan. But over a long horizon, sustained poaching, the training of overseas workforces, and determined national efforts to acquire TSMC-grade capability could, at the margin, narrow the experience gap that protects the company. The learning curve is the deepest part of the moat and, precisely because it is human, the part most exposed to being slowly, deliberately learned by others — a risk the geopolitics of chip sovereignty is actively working to realize — the CHIPS Act alone puts tens of billions behind building rival capability¹.