Well, Nintendo didn't acquire Monolith Soft until about a month after that article was written, so they wouldn't be included.
Project Sora wasn't founded until 2008, right? So that wouldn't have been included either.
And while Microsoft have started many new studios since 2007, they also let Bungie on the loose and disbanded Ensemble Studios and FASA Studio. These were my two favorite developers they employed, because of Age of Empires and MechCommander. =/