Of course, that's been the deal with this series from the beginning. GCCM wandered a bit with the story when he stretched it out, but at heart, it's idiots in the south playing their nonsense games while the real threat looms ignored. Once they've beaten themsevles up sufficiently, they'll figure out that the game of thrones was petty nonsense, and should band together to deal with the undead walkers headed their way instead.
Been that way since the opening chapter of the series, and not sure how else you can end it. Pretty much down to whether they formally end the King's landing stuff before the Walker war, or if they just all drop it, fight together, and go back to squabbling amongst whomever is still alive after.
Any other way to see this all ending? that's been the endgame from the beginning. Some flavor of Jon and Dany against the white walkers. Not much else has mattered