I think people are missing the point if developpers focused uniquely on install base then they would wait 3 or 4 years before even releasing any games, no one knows how many consoles will get sold and if their game is good it will sell big even if the install base is 3 million or 10 million, were not talking about consoles with only a few dozen sales here. And i think his message is rather that they will stick to their plans and focus on the game rather then worrying about the console trends.