The moment they fucked over Kojima, they killed MGS forever. There's nothing more than could have done to eradicate it.
It's really sad too. Kojima was what was left of Konami and they killed him off. Igarashi couldn't put up with Konami anymore either. The dudes that made Konami are leaving, and soon they won't be known for videogames anymore. And if they do videogames, it'll be mobile.