Southeast Asia has the demographics, digital adoption and manufacturing momentum to become one of the world’s most important growth regions. But to realise that potential, governments must choose scale over protectionism. The region’s biggest opportunity lies in acting more like an integrated market and less like a collection of guarded national economies.
Protectionist instincts are understandable. Governments want local jobs, domestic champions and control over strategic sectors. They worry that foreign platforms, banks or manufacturers will dominate if markets open too quickly. Yet excessive protection can trap companies inside markets too small to support global competitiveness. A digital bank, logistics platform or electric-vehicle supplier needs scale; national barriers make that scale harder to achieve.
ASEAN has spent decades promoting integration, but businesses still face different licensing rules, data requirements, customs procedures and ownership limits across the region. For large multinationals, those frictions are manageable. For regional start-ups and mid-sized manufacturers, they can be decisive. A company that should be expanding across five markets may spend its energy navigating paperwork in two.
The ASEAN Secretariat has long articulated the goal of regional economic integration, while the Asian Development Bank has published extensive research on connectivity, trade and infrastructure in Asia. The policy logic is clear: Southeast Asia becomes more attractive when investors can treat it as a connected production and consumer base.
Scale matters most in new industries. Data centres, renewable energy, EV supply chains, digital payments and healthcare platforms all require cross-border coordination. A fragmented regulatory environment raises costs and slows investment. Worse, it encourages companies to design country-specific systems rather than regional ones, reducing efficiency and limiting innovation.
This does not mean abandoning national interests. Governments can protect consumers, enforce competition rules and support local skills without closing markets. The better model is smart openness: common standards, interoperable systems and targeted safeguards. Countries should compete on infrastructure, talent and governance, not on who can create the most complex barriers.
There is also a geopolitical argument. A more integrated Southeast Asia has greater bargaining power with China, the United States, Japan, Korea and Europe. Fragmented markets can be played against each other. A region with shared standards and stronger internal trade can negotiate from a position of confidence.
The choice is becoming urgent. Supply-chain diversification is bringing investment opportunities that may not remain available indefinitely. If Southeast Asia wants to capture them, it must make regional expansion easier for the companies already operating within its borders. Protectionism may feel safe, but scale is what creates champions.
The region’s own companies are the clearest argument for scale. A payments provider in Vietnam, a logistics firm in Thailand or a health-tech platform in Indonesia should be able to imagine a regional market from inception. If expansion requires rebuilding the business country by country, Southeast Asia will produce fewer globally competitive firms than its population and talent should allow.
Integration also supports resilience. When supply chains, energy grids and data systems connect across borders, companies have more options during shocks. Protectionism promises control, but it can create fragility by limiting alternatives. A more connected Southeast Asia would be better positioned to absorb disruptions and bargain with larger economic powers.
The region does not need to become a single market overnight. But it does need to reduce the frictions that make regional companies feel foreign in neighbouring countries. If ASEAN can make expansion easier for its own firms, it will create stronger local competitors and a more compelling destination for global capital.
The moment is favourable because global companies are already diversifying supply chains. Southeast Asia can either receive that investment as fragmented national markets or shape it into a regional growth platform. The second path is harder, but far more valuable.
