Can ten countries with different cultures, traditions, languages, political systems, and levels of economic development act in concert to expand their collective potential? That is the question with which the Association of Southeast Asian Nations (ASEAN) has been wrestling for decades. Judging by their leaders’ ambitious vision for cooperation, the answer may be yes.

Once in place, the so-called ASEAN economic community (AEC) will transform Southeast Asia — and its role in the global economy.

ASEAN’s economic potential is undoubtedly impressive. Taken together, the group’s members — Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam — would comprise the world’s seventh-largest economy. Moreover, ASEAN’s international trade has almost tripled over the last decade. And foreign-direct investment has been flowing into the region, with multinationals hoping to capitalize on its rapidly expanding middle class and strategic location at the intersection of China, Japan and India.

The AEC plan aims to build on this momentum by removing barriers to the movement of goods, services, capital, and people throughout the region. The McKinsey Global Institute (MGI) estimates that, by implementing this integration strategy fully and capturing a larger share of global manufacturing, the ASEAN countries could gain $280-625 billion in annual GDP by 2030.

Part of that growth stems from encouraging local companies to expand beyond their home markets. But ASEAN’s quest to become a unified market is far from complete. While average tariff rates in the original five member have been virtually zero since 2010, some barriers must still be dismantled. An MGI survey of regional businesses identified restrictions on foreign investment and ownership, inconsistent standards and regulations, and inefficient customs procedures as the biggest remaining barriers to trade.

Though full integration appears unlikely by ASEAN’s target date of 2015, lately the effort has been imbued with a renewed sense of urgency. As wages in China rise, Southeast Asian economies have a window of opportunity to become the next “factories to the world.”

Of course, competing on the basis of low wages alone would be inadequate to raise living standards in the long term. ASEAN will also need to compete on productivity — an area in which countries like Cambodia, Indonesia, and Vietnam are currently at a disadvantage. Excluding Singapore and Brunei, average labor productivity in ASEAN remains about 40 percent lower than in China. In fact, ASEAN’s focus on trade makes diversity an advantage, as companies seek to benefit from low-cost labor in some countries and intermediate manufacturing capabilities in others, all while gaining access to one of the world’s most sophisticated financial and logistics centers. Though member states may sometimes have to compete with one another for market share and multinational operations, their areas of specialization would largely be complementary.

ASEAN’s lower-income economies have expressed concern that they will miss out on many of the benefits of deeper integration. But this does not have to be the case. Mexico, for example, has arguably enjoyed greater economic benefits from the North American Free Trade Agreement than the US or Canada has.

Nonetheless, this uneasiness reflects a central challenge facing ASEAN. From its inception, the group has fundamentally been a top-down project, driven by the region’s leaders instead of its people. But, as member countries have become more democratic, solidifying public support has become increasingly important — meaning that ASEAN leaders must work to communicate the benefits of integration more effectively.

At the same time, ASEAN governments must urge businesses to expand into neighboring markets. Here, removing a handful of key administrative barriers could go a long way.

As it stands, restrictions on foreign investment and trade barriers continue to shield many domestic industries from competitive pressures. Now, ASEAN countries must decide whether to retreat into protectionism or reaffirm their commitment to a more open approach. Though the latter option would undoubtedly create winners and losers, it could also stimulate the region’s overall productivity growth.

©Project Syndicate