Does it make sense to talk about corporate (moral) responsibility for climate change mitigation? Through utilizing systems thinking, I will argue that mitigation should be incorporated into corporate policies for present and future activities within the existing political framework. However, not much retrospective responsibility exists for past emissions. Exception to this are corporations who have engaged in climate change lobbying activities, voluntarily expanding their sphere of influence in the system. They could be responsible for the damage caused by misinformation campaigns and subject to compensation claims.