FF games have rarely sold more than 10 million so this number is already the peak. The series has a limit on how much it can sell. All of the people saying this Remake can sell 10 million easily, I just don't see it. I already explained the reason but it was taken as a criticism against the game. I have no idea how many people have finished the game but the reaction to the ending is quite divisive and the more people will finish it or see the ending, the more word of mouth around it is going to spread.