Social entrepreneurship is one of the catalysts of poverty reduction and sustainable development, but its impact in developing countries is not rapid in comparison to traditional entrepreneurship. The idea is to explain the phenomenon from an entrepreneurial perspective and to focus on entrepreneur sustainability. The data for this study was collected at the firm level with questionnaires through Qualtrics online survey platform. The structured questionnaires target the Social Micro, Small, and Medium-Sized Enterprises in Nigeria. This study provides a fundamental understanding of structural relationships that exist between the social vision, social network, financial return, innovation, and SMSME sustainability and contributes to the literature by deepening the concepts of social entrepreneurship in developing countries, where social and economic conditions are not stable.