Showrunners David Benioff and Dan Weiss had previously stated that they were only looking for two shortened seasons after Season 6, and the end finally seems relatively nigh.
David Benioff and Dan Weiss want to tell a complete story that doesn’t needlessly meander for the sake of producing as many episodes as possible.
Game of Thrones has spent so long stalling potential plots that it was beginning to seem like the show would never come to an end.
According to Benioff in the wake of the Season 6 finale, they have big reasons for ending the series sooner rather than later.