Tan Poh Hwee is president of the Asia Academy of Digital Economics, a Singapore-based non-profit, and a corresponding fellow of the National Academy of Artificial Intelligence.The Association of Southeast Asian Nations has a role to play in Hong Kong’s plans for its economy. Chief Executive John Lee Ka-chiu signalled as much when he touched on the city’s first five-year plan in his August 7 meeting with Asean Secretary General Kao Kim Hourn.For businesses, however, the central question is not whether Hong Kong-Asean economic ties will continue to grow. They will. The harder question is who will capture the value that...