V-r0cK on 18 June 2015
The way I see it Sony doesn't need to because they're constantly getting exclusive games (big or small) so their PS4 library is growing significantly. Whereas XB1 isn't getting as much as the PS4 so to make their XB1 library seem larger they had to add backwards compatibility which is great for fans but to me it also shows it as a sign of desperation. If MS had backwards compatibility from the beginning then that would look different.
