This would have worked much better in non-jaffe's favour if gamestop's used game prices didn't suck so much ass. Saving only $5 is fine, but their buy-back prices are so low in comparison that, in my opinion anyway, they (GS) are almost encouraging people to use other resell methods (ebay, jiji, etc.) I mean, new game is $60, used is $55, buy-back price is $30... Go on eBay, and the same game is $40-45 -- that means you save $10-15 and the seller gets an additional $10-15 over the GS equivalent.
...but, yeah, the dev/pub always gets rocked by used games sales.
As far as digidist is concerned, I definitely do not buy as frequently or as many games, so I think Jaffe thinking that DD will be a devs/pubs saving grace is ill conceived... And knowing that I'll be able to find a "brand new copy" of a game via digital distribution means I'm much more likely to wait for the price to drop to like $3.99 on Steam or whatever, even if it's 2 years out.