Sure. My point is, however, that once that character
does become lord of his own domain, what happens next? Where does or can the greater campaign go from there, and how? How can both the players and GM make further use of the background lore and stories that have built up over the course of play so far?
Completely ending the campaign and starting something new is to me the nuclear option, in that starting brand new means designing a whole new setting - which IME represents about a real-world year of work before even getting to the point of asking who's interested in playing in it. I'd rather not do all that any more frequently than I have to, if it's all the same.