“Call of Duty is not replicable. Call of Duty is too entrenched for any rival, no matter how well equipped, to catch up. It has been the top-selling game for almost every year in the last decade and, in the first-person shooter (‘FPS’) genre, it is overwhelmingly the top-selling game. Other publishers do not have the resources or expertise to match its success. To give a concrete example, Electronic Arts — one of the largest third-party developers after Activision — has tried for…