In abit under 2years, its done 3m+ or so....
It ll probably sell for another 2 years (2020 PS5), and might do another 3m in that amount of time (esp if they get prices down).
if it continues to sell abit even after that? sure.
Yes it might do 7m+ life time.
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071