Emergence and maintenance of industry comparative advantage——The perspective of knowledge spillover and policy intervention
The fundamental question in exploring the path of economic growth is how emerging industries gain and maintain their comparative advantages.This paper investigates the impact of knowledge spillovers and policy interventions on the emergence and sustainability of comparative advantages,using big data from 1.33 million registered enterprises across provinces from 2010 to 2020.It conducts various heterogeneous analyses at the industry and provincial levels to explore this issue in depth.The study finds that knowledge spillovers contribute to the emergence of new industry comparative advantages.However,only knowledge spillovers among related industries within a province facilitate the maintenance of existing comparative advantages.National-level industrial policies do not increase the probability of the emergence of supported industry com-parative advantages but enhance the share of targeted industries.Regarding the development of comparative advantages,industries with high knowledge intensity and geographic concentration receive lower benefits from knowledge spillovers.Provinces in the central and western regions and those with higher specialization rely more on inter-provincial knowledge spillovers during industry development.Further analysis reveals that a developed highway system enhances the promotion effect of inter-provincial knowledge spillovers on industry development,while provinces with a high net inflow of population act as knowledge spillover sources.Inter-provincial knowledge spillovers positively moderate the effectiveness of development policies for targeted industries.This research provides empirical evidence for enhancing industry diversity.