I'm not totally convinced on that, but only because Gamestop not only rarely lowers prices (except for on unpopular games, yearly releases like sports titles, or literally a couple of years after release), they continually gank people on used games. As if it isn't bad enough they give someone $20-30 credit for a game tops and charge you $5 under the price of a new copy, they'll keep charging those prices long after it makes any sense. When I went to get a copy of Little Big Planet for my sister for Christmas they had used copies for $65 Canadian and new game of the year copies with all of the DLC for $70.
Even if console makers do gank us on downloadable games we won't be a lot worse off.