His argument is based only on retail figures, so no digital distribution. I don't think those charts account for e-tailers like Amazon either.
So, there are a lot of variables that contribute to declining console game sales: - Game prices going up. - Increased used sales and rentals as a result of rising prices. - Consoles losing momentum as they get closer to the end of their generation. - Console gamers migrating to PC where they can save money and get the best versions of any given game. - Console gamers buying more games online than at retail due to convenience and pricing.