Lets Say ND Didn't Want To Make Uncharted Anymore..

[S.T.A.G.E.]

Naughty Dog is Sony. If Sony wants it, it will be done unless the resources arent there. Naughty Dog cannot say no because thats like Sony saying no. This isnt like the bungie, Microsoft situations where the Bungie founders stuck around and eventually because of creative differences severed their ties.