At the current rate it will sell around 500k every month, or 6 million a year, plus 2 million every holiday, so, 8 million a year.
So, I guess it will get to 64 million or so in 8 years, when it will be dropped for good.
Of course, Sony can go into bankruptcy in 2 or 3 years, so, in that case, 20 or 30 million, and a lot of sad gamers.=/









