That's if SQEX continues with the whole project. I'm not too sure how many people are going to want to continue to purchase the next installments since the end of this one turned FF7 into kingdom hearts with time travel BS and basically unhooked the current game's timeline from what the original was supposed to be.
While the plot is surely controversial to some, I've seen no indication that this game is doing poorly, nor any indication that they're going to can the remaining installments.