The game market doesn't really need to crash for that to happen though. All it would take is for people to stop buying said shovelware which may be coming. But then again, my mom, who is exactly the sort of casual gamer Nintendo has been attracting since the release of the Wii plays hidden object games, so we may all be underestimating the tolerance level these gamers have for complete.
I swear it amazes me that her taste in games usually includes games that I previously would have thought you'd need to be five to enjoy.