If the series ever loses popularity then i think Activision will make a new IP exactly the same. and simply change the name.
the only game i can see that would affect COD's sales is GTA5. i think if Rockstar decided to release during the same time frame as COD, that would be the only title the mass consumer would choose over COD imo.
however i could be wrong, they're might be nothing that beats COD, even if they's a superior product, simply because of brand recognition.








