I'm not even going to come from this from a troll perspective but honestly, what else can they do? They are all great games and continues to be so but two things have happened.
Sony only console people tend who get these games come to expect these lush third person games, that's literally all they play. If it weren't, we'd see another drive club, motorstorm, hot shots golf or even another gravity rush. In a way, Sony is pigeon holed.
The other point is that a lot of gamers will be transient. The games are the platforms, not the platform themselves. I sincerely doubt most fps shooter fans or sports fans care about where they play the games, it's more about convenience and cost. I build upon this by saying there are over 120 million ps4s sold, Spiderman is at 20 million and I'm sure all of the other Sony 1st party gsmes have a lot of overlap with the same type of consumer. So let's say there are 80ish million people that would be at least willing to look at other options. I ultimately believe that it is the variety of what Microsoft has to offer that will lead them to success. There will be high quality games for everyone in multiple genres.