23/09/2015. Domi Enders. Abstract: OER has won the â€œBattle of Openâ€, to quote Martin Weller, but how will it achieve mainstream adoption? I would argue that each of us in the Commons may ultimatelyâ€“if we are to continue working towards mainstream adoption of our mission of affordability, openness and innovation in educationâ€“take the lead by supporting and shaping emergent open business models. Otherwise, is it really sustainable for OERâ€™s mission to be entirely sustained by non-profits and governmental agencies?