Structural Challenges of the Global Trading System: Paradigm Shift from Multipolar Economy to Supply Chain Restructuring

Structural Challenges to the Global Trading System: Paradigm Shift from Multipolar Economy to Supply Chain Reconfiguration

Over the past three decades, global trade has undergone a profound structural reshaping. The geographical center of economic activity has significantly shifted towards rapidly growing emerging economies, and this transition has made the differences in economic systems and the degree of government intervention in markets a core issue in trade discussions. Against the backdrop of the expansion of global value chains (GVCs) and the acceleration of digital transformation, the essence of trade—what is "traded" and "how it is traded"—is being redefined, and climate change issues are increasingly highlighting the crucial role of trade in adapting to environmental transitions.

I. Reshaping of Economic Power Distribution and the Pressure on Multilateral Systems

The foundation of the WTO system lies in establishing a rules-based, deeply integrated global economy. However, the world is evolving towards a more multipolar and competitive global economy. A key structural change is the significant shift in the distribution of economic power in global trade. Since 1995, the share of low- and middle-income economies in global goods trade has doubled, surging from 23% in 1995 to 45% in 2024. This growth is not only a driver for the GDP growth and poverty reduction of low- and middle-income economies but also signifies that their consumption and purchasing power in global trade are increasing, thereby granting them greater influence in global price setting.

This power shift brings new issues: how to balance existing trade commitments with current economic realities? As emerging economies become major global trading participants and key product suppliers, their influence on the global market is growing. This raises a structural question about "market power": can existing tariff commitments effectively constrain major economies from exercising market power on world prices? Research indicates that as the gap between market realities and established tariff commitments widens, existing adjustment mechanisms may be unable to effectively cope with the trade terms-of-trade spillovers generated by contemporary economic behavior. This forces the trading system to re-examine its mechanisms for constraining market power.

II. The Rise of Emerging Economies and the Bargaining of Trade Rules

The role of emerging economies in global trade is no longer just that of consumers; they are transforming from mere recipients to major suppliers in key areas. This elevation in supply status is also changing the standing of the "major supplier" rule in trade negotiations. This shift not only affects trade flows but also profoundly alters the structure of trade negotiations, giving rise to new opportunities for bargaining and potential space for rule-making.However, this power dispersion also brings institutional challenges. Under the WTO framework, the economic interventions and industrial subsidy strategies of various governments are becoming increasingly prominent. The emergence of new industrial strategies has led countries to be more proactive in the use of subsidies, making the definition of a "level playing field" more complex and posing new challenges to rule-making. The toolbox of trade policy tools is expanding beyond simple tariffs to include more systematic measures such as industrial policy, subsidies, and national security considerations, which requires the WTO system to upgrade its capacity to manage the spillover effects of trade policies.

III. Digital Trade, Climate Change, and Supply Chain Resilience Reconstruction

Beyond the macro narratives of economics and geopolitics, changes at the micro and technological levels of trade are driving deeper supply chain reconstructions. Digital transformation, especially the rapid rise of artificial intelligence, is fundamentally changing the nature of trade, redefining what we "trade," and creating entirely new economic opportunities. At the same time, climate change is no longer an isolated environmental issue; it is embedded in trade policy considerations and has become a key variable affecting the adaptability of the global value chain. A lack of coordinated effort between environmental and trade policies will not only limit the economy's transition to low-carbon development but may also have negative impacts on trading partners.

Conclusion: Adapting to the New Multipolar Normal

In summary, the current global trade landscape is not a simple linear development but a process full of structural tensions. The multilateral trading system faces unprecedented pressure in responding to economic structural shifts, escalating geopolitical risks, and disruptive technological changes. Future trade governance will no longer rely solely on traditional tariff barriers but will require a framework capable of effectively managing the power dispersion brought by the rise of emerging economies, balancing state intervention with market efficiency, and building a collaborative structure that bridges the digital divide and climate challenges. Globalization has entered a new phase that requires redefining its "rules" and "boundaries."