Business incubators contribute to the development of entrepreneurship, innovation, and regional economy. However, in developing countries, implementation faces challenges and obstacles that threaten the success and sustainability of their operations. This research examines the influence of incubator resources, service capabilities, and government support on the success of business incubators. We conducted a national survey and used structural equation modelling analysis to test hypotheses on a sample representing seventy-six percent of the business incubator population in Indonesia, one of the developing countries in Asia. Empirical evidence shows that most incubators in Indonesia are non-profit, university-based, and technology business incubators. The incubator's resources and government support impact its service capabilities. However, the incubator's resources and government support do not directly impact its success. The novelty is that service capability acts as a full mediating variable on the influence of government support and incubator resources on the success of business incubators. The final section outlines managerial implications and future research directions.