The intervention moves the price of advanced semiconductor manufacturing equipment in restricted markets upward. But supply will respond by rerouting through alternative channels and accelerating domestic development programs, while demand will adapt by prioritizing older technologies or consolidating production in friendly jurisdictions. The new equilibrium will not be the one the planners expected. It never is, and here is why.

Consider first the immediate effect of the ASML export controls. In the short run, the supply curve for cutting-edge lithography equipment shifts sharply leftward for targeted markets. This creates a classic shortage situation, with prices rising and quantities falling dramatically. Those who already possess equipment find their assets appreciating in value, while aspiring semiconductor manufacturers face significant barriers to entry. The demand curve itself remains relatively fixed in this initial phase, as few can quickly substitute away from the need for these specialized machines.

Yet markets have a way of finding equilibrium through unexpected channels. In the long run, the supply response becomes more complex. Equipment manufacturers will develop workarounds, perhaps by selling through intermediaries in third countries or by producing slightly modified versions that fall outside regulatory definitions. Meanwhile, the affected nations will redouble efforts to develop domestic capabilities, shifting the long-run supply curve rightward as indigenous technologies mature. This adjustment may take years, but it is inevitable.

Simultaneously, TSMC’s capacity expansion represents a countervailing force. By increasing the overall supply of semiconductors, TSMC’s expansion shifts the semiconductor supply curve rightward, potentially offsetting some of the upward price pressure created by equipment shortages. However, this effect depends crucially on whether TSMC’s new capacity can produce the most advanced chips or primarily serves less sophisticated segments of the market.

The critical qualification lies in the elasticity of supply across different technological tiers. While the market for leading-edge chips may remain constrained, the market for older technologies could see substantial price reductions as production shifts and capacity expands. This creates a bifurcated market structure, with premium chips commanding ever-higher prices due to scarcity, while legacy chips become increasingly commoditized.

Consumers and businesses alike will face these divergent price signals. Some industries may find themselves priced out of the most advanced technologies, while others benefit from greater availability of older chips. The net effect on economic welfare remains ambiguous - it depends on which sectors are most productive and most able to adapt to these new constraints.

The planners focused on the immediate supply disruption while underestimating the market’s adaptive capacity. In the long run, the semiconductor industry will likely reconfigure itself around these new constraints, creating a less integrated but more resilient global supply chain. The true cost of these export controls may not appear in price statistics but in the efficiency losses from a more fragmented technological ecosystem.