This paper analyses how the factors breadth of content offerings, boundary resources, and exclusive content explain complementor participation in plat-form-based ecosystems, in the context of video game consoles. Fixed effects regressions on a panel com-prising two generations of consoles across six plat-forms show that the breadth of content offerings posi-tively affects complementor participation. We find that breadth of content offerings, but not boundary resources and exclusive content, are positively related to complementor participation. When studied in one model, breadth of content offerings dominates the relationship. Our results show how complementor ecosystems can be orchestrated to proliferate a varie-ty of complementary product offerings
