For over a decade, sharing economy companies ("sharecoms") have been operating on an international stage with novel digital platform-based business models that create and capture value through unique dimensional configurations. However, the relationship between these business models and the international expansion of sharecoms remains under-theorized. This longitudinal study addresses this gap and presents new empirically driven insights. Based on a cross-border, cross-sector case study of six sharecoms, we investigated the evolution of the business model in relation to internationalization. The results showed that multidimensional changes took place within the business models, impacting the sharecoms' internationalization in terms of speed, scale, and scope through circular causality. Moreover, by creating virtuous cycles of business model change and internationalization, sharecoms were able to achieve network effects and unlock value.