"Shuhei Yoshida: Well, yeah. I don’t know. As soon as we see a great sales number, our instinct tells us we should be concerned about future sales, right? Are we exhausting all the core gamers? If we sell this number of units, there are no more consumers we can sell to. That’s a really terrifying prospect. So we want to understand who are these consumers who we do not necessarily consider core gamers, who are purchasing PS4 and why they are doing it and what they are doing with PS4, so we can create a bit more of a positive future, rather than saying, wow, we have sold to every single core gamer. So that’s what we are doing."
Tomb Raider, Vita’s no-show and the mystery of 10m PS4 sales • Eurogamer.net