I just think the industry in general maybe setting itself up for failure by expecting too much. It would be like thinking the next Batman movie will top the Dark Knight. Well it might, but at the same time The Dark Knight was such a high point in comic book movies that if nothing ever surpassed it I wouldn't be suprised. 2009 was kind of like that, just an amazing year with lots of growth. Its only realistic to realize that, sure, the gaming market might not grow year over year during every single year.
I think things are thrown out of line by not moving into the next generation and instead prolonging this one. Its probably hard for some consumers to get excited about the same consoles that have been on the market for half a decade already. You can wave Wii Motion plus and Kinect and Move in front of their face all you want but at the end of the day if they didn't want a Wii or 360 or PS3 before I honestly doubt any of these add-ons are going to sway them over.
Like I said I just think they are expecting too much. Nothing good lasts forever, we should just be glad games haven't crashed again, and more or less have been permanently established as a lasting form of entertainment.
