This doesn't speak to larger devs and publishers making less AA games, I agree there was an AAA boom during the 360/ps3 era, but it doesn't account for the practice of dissolving entire teams to make maps and tweak multiplayer modes that no one played. Publishers were chasing blockbusters, but people still enjoyed smaller games and supported them. Remember the xbla buzz around games like Shadow Complex or Bastion? How do you make sense of Ubisoft abandoning popular, critically acclaimed games like Rayman Legends?
Also, if you can't find that article let me know the cover, I probably have the issue from that era.