Rare Earths and Semiconductors: Two Chokepoints, One Systemic Risk

Global manufacturing runs on two single points of failure, not one, and both sit inside the same triangle of great-power tension. Taiwan controls 68% of global semiconductor foundry capacity — Taiwan Semiconductor Manufacturing Company (TSMC) alone holds 62%, with United Microelectronics Corporation (UMC) contributing another 6% — while China controls close to 90% of global rare earth element (REE) processing and 60-70% of mining output. Neither figure is an ordinary comparative-advantage outcome. Both represent concentration levels that would be treated as industrial monopolies almost anywhere else, and both sit in economies separated from the world's largest technology consumers by exactly the kind of rivalry that turns a supply chain into a lever.

What makes this genuinely dangerous, rather than merely inconvenient, is that the two chokepoints are not parallel risks sitting side by side — they are interdependent. Semiconductor fabrication cannot proceed without rare earth and rare-metal inputs for magnets, polishing compounds, and radiation shielding; rare earth separation and processing, in turn, depends on the advanced electronics and precision instrumentation that only a semiconductor-capable industrial base can supply. A shock to one chokepoint does not stay contained to that chokepoint. This comparative, systemic reading of concentration risk is precisely the analytical frame GS Paper III's industrial-policy and economic-security themes reward, and it is the frame most current-affairs coverage misses by treating semiconductors and rare earths as two unrelated headlines that happen to share a news cycle.

The Silicon Chokepoint: Taiwan's 68% and the Fabless Trap

Global foundry capacity is concentrated to a degree that has no real parallel in modern industry:

• Taiwan: 68% (TSMC 62% + UMC 6%)
• South Korea: 10% (Samsung)
• US/Europe: 6% (GlobalFoundries)
• China: 5% (SMIC)

TSMC alone fabricates close to two-thirds of the world's chips, making it one of the most concentrated industrial choke assets in modern economic history. The exposure is magnified by the "fabless" model that now dominates the industry: companies like Apple, Nvidia, and AMD design chips but own no fabrication capacity of their own, leaving them entirely dependent on external foundries — overwhelmingly TSMC — to actually manufacture what they design. This is not a diversified supplier relationship; it is a single point of failure sitting underneath most of the world's consumer electronics, AI infrastructure, and defence systems simultaneously. Any earthquake, typhoon, or escalation in Taiwan Strait tensions could disrupt two-thirds of global chip production in a matter of weeks, with cascading effects on every downstream industry that depends on semiconductors — which today is essentially all of them.

The Rare Earth Chokepoint: China's Processing Stranglehold

Rare earth elements are a group of 17 elements in Group 3 of the periodic table, prized for superconductivity, ferromagnetism, and catalytic, optical, and fluorescent properties that make them irreplaceable in permanent magnets (neodymium, dysprosium), semiconductors, optical lenses, radiation shielding, missile guidance systems, and green-technology hardware such as wind turbines and EV motors. Producing them is neither quick nor clean — refining involves several hundred stages of processing and generates groundwater pollution, radioactive waste that often contains uranium, and heavy consumption of water, acid, and electricity, which is exactly why so few countries have chosen to build processing capacity even where they hold reserves.

The scale of the demand this concentrated supply must serve is expanding fast. A single 2MW wind turbine requires 360kg of neodymium and 60kg of dysprosium; a hybrid electric vehicle battery needs roughly 14kg of rare earths; and wind energy generation is projected to rise from 1,390 TWh in 2018 to 4,355 TWh by 2030, even as roughly 70 million internal-combustion-engine vehicles a year are being replaced by EVs globally. Current REE production sits below 300,000 metric tonnes annually — a supply base that is not remotely scaling at the pace renewable energy and electric mobility require.

China's dominance over this supply base is the product of deliberate industrial policy, not geological accident. Beijing merged more than 100 separate rare earth firms into six state-owned enterprises that now control 99.9% of the domestic production quota, and China holds more REE patents than every other country combined — a technology-leadership position built over four decades.

"There is oil in the Middle East; there is rare earth in China." Deng Xiaoping's 1992 remark was less a boast than a strategic roadmap, and China's subsequent consolidation of mining, processing, and patent leadership shows how methodically that roadmap was executed.

Proof of Weaponization: What 32 Years of Data Show

The claim that China uses REE dominance as a diplomatic lever is no longer speculative — it has been demonstrated statistically. A 32-year analysis of REE trade data found the first empirical evidence of geopolitics directly shaping strategic commodity trade: a 1% increase in geopolitical risk correlates with a 0.429% increase in REE prices. More tellingly, China's own export restrictions are roughly three times more price-sensitive than equivalent restrictions imposed by any other rare-earth-producing country — meaning markets react far more sharply when China specifically tightens supply than when anyone else does, which is exactly what deliberate, credible leverage looks like in price data rather than in political rhetoric.

The clearest real-world confirmation came during the 2010-2012 China-Japan dispute, triggered by a trawler collision near the Senkaku/Diaoyu Islands. REE prices rose from roughly 1,000 JPY/kg to more than 20,000 JPY/kg — a jump of about 2,000% in under two years. Notably, higher geopolitical risk raised prices but simultaneously reduced trade volumes, so total trade value did not rise proportionally with the price spike; the leverage showed up primarily as a scarcity signal rather than a straightforward revenue windfall for China. Enforcement also proved porous: black market exports during the 2011 restrictions actually exceeded legal exports, underscoring how difficult it is to police an embargo on a commodity this widely smuggled and re-routed.

The Circular Trap: Why Neither Chokepoint Can Be Solved Alone

The most consequential finding linking these two crises is structural, not statistical: semiconductors require rare earth inputs, and rare earth processing requires advanced electronics. This circular dependency means a nation cannot simply fix one chokepoint and treat the other as separately manageable. Even where importing nations succeed in diversifying mining away from China — Australia's Lynas or the reopened Mountain Pass mine in the United States, for instance — the ore frequently still needs Chinese processing facilities to be separated into usable oxides, because that is where the specialised, heavily polluting, capital-intensive separation capacity actually exists. Limited substitution compounds the problem further: there are no viable alternatives for most critical REE applications, and no comparable foundry capacity exists anywhere near Taiwan's scale on any short timeline. Industry experts place a realistic diversification horizon at 2030-2050, which means today's dual concentration is a multi-decade structural condition, not a supply hiccup that resolves itself. This is also why the topic straddles GS Paper II's coverage of great-power competition and supply-chain diplomacy as much as it does GS Paper III's economic-security terrain — an answer that boxes semiconductors and rare earths into separate compartments misses the systemic argument examiners increasingly reward.

Building Resilience: Reserves, Emergency Powers, and Transparency

The policy response required is correspondingly two-pronged, addressing immediate exposure while building long-term alternatives. For importing nations, the recommended near-term measures are:

1. 1Declare a strategic materials emergency to trigger urgent government intervention and funding authority.
2. 2Establish critical material reserves equivalent to 6-12 months of consumption, covering both semiconductors and rare earths.
3. 3Invest in alternative supply development through dedicated government funding rather than relying on market incentives alone.
4. 4Coordinate internationally to avoid beggar-thy-neighbour competition for the same limited pool of alternative supply.

At the multilateral level, the priorities shift toward transparency and rule-making:

• Supply chain transparency standards that make concentration risk visible before a crisis, not after one.
• International monitoring systems for geopolitical supply risk, akin to early-warning systems used for financial contagion.
• Multilateral frameworks for supply-security cooperation among importing nations.
• Restrictions on strategic-material weaponization through binding international agreements.

Trillions of dollars in economic value, along with climate goals tied to the renewable-energy transition, ultimately depend on continued access to these two concentrated supply chains, which is why defence planners now treat both semiconductors and rare earths as existential-threat categories rather than routine trade commodities.

Aspirants preparing GS Paper III's economic-security segment, or Essay questions on globalisation's vulnerabilities and resource nationalism, will find that this comparative chokepoint framing — two concentrated, interdependent supply chains rather than one isolated commodity story — is exactly the kind of systemic argument that separates a descriptive answer from an analytical one. Building that habit of connecting seemingly separate current-affairs threads into one coherent economic-security argument is a core part of what we work through in our Indian Economy programme (/courses/economy/) at Roundtable IAS.