Space commercialization is the application of market principles, private investment, and entrepreneurial models to activities traditionally or previously dominated by state actors in outer space, representing the shift towards private sector development and operation of space-related goods, services, and infrastructure. As a research concept, it investigates the economic, technological, political, legal, and social dimensions of this shift, examining market dynamics, business models, regulatory frameworks, policy implications, investment trends, and the resulting impacts on space access, utilization, and governance. Key characteristics include its interdisciplinary nature, analysis of public-private partnerships, focus on innovation drivers, and examination of the transition from primarily governmental to increasingly commercial space ecosystems. Its significance lies in its role as a transformative phenomenon reshaping the global space sector, fostering new industries, enhancing accessibility, and presenting complex challenges related to sustainability, security, and international cooperation.