Not exactly true, it's struggling to stay flat compared to last year's numbers when there was really nothing to play notwithstanding the fact that this year has been full of amazing games like Bloodborne, Witcher, Batman, MGSV,etc.
This is a missed opportunity, they're losing potential sales and spikes from big releases are just keeping them flat yoy when they have the margin to easily cut the price.
50$ is nothing for them to recoup also considering the recent cut in manufacturing costs but will give them a nice extra kick in sales and will make them much more competitive and healthy duruing the key November and December months. Competition will also get stronger (at least in the US) and they don't want to see what happened last year to repeat.