If/when the gaming crash happens again, it will be ultimately traced back to the success of the Wii. The Wii showed a lot of publishers that the casual gamer will buy any shovelware crap that you put out, and it showed them a new pool of audience. So now publishers are either making poorly made generic games like Battleship or Aliens Colonial Marine or they are trying to milk every dollar out of the casual gamers with on disc DLC like Capcom. But this trend can't continue forever, the moment something shinier/newer comes along, the casual gamers will stop gaming, and the industry will crash. I think if the Wii didn't had the success that it had, gaming would still be a relatively niche thing, and we would be playing less games, but the games would have better quality.