Our journey starts from the open source system Ontop, a state-of-the-art system for data integration based on Virtual Knowledge Graphs (VKG), which has been developed at the Free University of Bozen-Bolzano (UNIBZ) for the past 10 years, and has been widely adopted in research and industrial projects. Recently, we started Ontopic S.r.l, the first spin-off of UNIBZ, whose mission is to bring the VKG technology to industry by leveraging the Ontop system. In this talk, we will share the story of Ontopic, focusing on the role of open source development in the company.