As Washington and Beijing escalate their contest for technological supremacy, South Korea's government and its two semiconductor giants — Samsung and SK Hynix — are mounting a sweeping investment offensive to defend their place at the commanding heights of the global chip industry. At a moment when demand for artificial-intelligence hardware is surging, the direction and effectiveness of that investment may well determine the structural character of the Korean economy for a generation.

Memory's second act

The explosive growth of the AI industry is fundamentally reshaping the semiconductor market. Nowhere is this more visible than in high-bandwidth memory (HBM) — the specialised chips essential for training and running large language models (LLMs). SK Hynix holds more than 50% of the global HBM market and has secured a dominant position as the primary supplier of HBM3E to Nvidia's H100 and B100 series AI accelerators. In doing so, memory chips have been elevated from commodity components to strategic assets at the core of AI infrastructure.

Samsung is moving quickly to catch up. Its next-generation HBM4 chip promises a dramatic improvement in data-throughput speeds, and the company is racing to begin mass production in the second half of 2025. The industry widely regards a successful HBM4 ramp as the clearest signal that Samsung has recovered its technological footing — and its ambition to reclaim the HBM market leadership it has ceded to its domestic rival.

A 622 trillion-won bet

The South Korean government is pursuing one of the most ambitious industrial-policy projects in the world: a vast semiconductor cluster in Yongin, in Gyeonggi Province, to be built by 2047. Led by Samsung and SK Hynix, the project carries a total investment figure of 622 trillion won (roughly $450 billion) — making it the largest single industrial cluster of its kind anywhere on earth.

To attract and sustain that investment, the government is also tightening the policy scaffolding. It is pushing through dedicated semiconductor legislation and expanding tax incentives, raising the investment tax credit for semiconductor facilities to 15% for large companies, with additional support available under the national strategic technology investment scheme. Analysts draw comparisons to America's CHIPS Act ($52 billion) and the European Chips Act (€43 billion), describing Korea's package as a comparable turning point in industrial policy.

What Samsung and SK Hynix stand to gain — and lose

The implications of this investment for both companies are double-edged. On the positive side, clustering effects should deepen ties with suppliers of materials, components, and equipment, accelerating the internalisation of supply chains. There is also an argument that, as American export controls on China's semiconductor industry persist, South Korea's position as a neutral production hub becomes more strategically valuable.

The risks, however, are real. Samsung's contract chip-making (foundry) division continues to struggle against TSMC, which retains more than 90% of the market for leading-edge processes. Samsung Foundry has been beset by yield problems and customer defections. The sheer scale of the 622-trillion-won commitment also raises concerns about financial strain: in an industry as cyclical as semiconductors, concentrating heavy capital expenditure at the wrong point in the cycle can devastate profitability.

SK Hynix, meanwhile, leads in HBM but faces mounting competitive pressure as Micron enters the HBM3E market in earnest. Backed by CHIPS Act subsidies, Micron is expanding capacity rapidly, and a bruising share battle in the HBM market looks inevitable over the medium term.

Lessons from abroad

America's attempt to revive domestic chip manufacturing around Intel has been accompanied by enormous subsidies, yet Intel's persistent underperformance and process-development delays illustrate the limits of state-directed industrial policy. TSMC, by contrast, built its unrivalled position by concentrating on proprietary technology and ecosystem development rather than government largesse. Japan's Rapidus venture — targeting domestic production of two-nanometre chips — faces formidable barriers in talent, technology, and capital.

Korea's advantage is that it already possesses two world-class players. If government policy is calibrated carefully to reinforce rather than substitute for their technological dynamism, South Korea can sustain a competitive edge that eludes the industrial strategies of America, Japan, and Europe alike.

The deeper problem: people and ecosystems

Yet hardware investment alone will not be sufficient. The most acute bottleneck in Korea's semiconductor industry is a shortage of skilled workers. According to the Ministry of Science and ICT, demand for specialist semiconductor professionals will reach approximately 30,000 by 2031 — yet at current rates of supply, fewer than half that number will be available. Without a parallel expansion of university semiconductor programmes and stronger industry-academia collaboration, even the most lavish capital expenditure risks becoming an expensive monument to unfulfilled potential.

The domestic supply chain for materials, components, and equipment also remains thin. Korean chipmakers are heavily dependent on foreign suppliers — ASML of the Netherlands for lithography equipment, Applied Materials of the United States for deposition and etch tools — leaving them exposed to supply-chain shocks. As the US-China confrontation deepens and equipment export controls tighten, accelerating the self-sufficiency of Korea's domestic equipment and materials ecosystem becomes a critical variable in its long-term competitiveness.

Outlook: a race to consolidate

Ultimately, the future of Korea's semiconductor industry hinges on how quickly and durably it can extend its existing technological advantages. If its leading positions in HBM and NAND flash memory are matched by focused government support, South Korea stands a strong chance of remaining a linchpin of global semiconductor supply chains well into the 2030s. But if the structural challenges — talent development, supply-chain self-sufficiency, and foundry competitiveness — go unresolved, the 622-trillion-won headline figure will guarantee neither efficiency nor returns.

What South Korea is fighting for is not merely a share of a market. It is a contest over who controls the foundational infrastructure of the AI era — a civilisational competition, in the broadest sense. How rigorously Korea prepares for that contest will determine its economic standing for the next generation.