As I'm sure many people have mentioned, it doesn't make sense for MS/Sony to ban used games from next gen consoles when their rival could cap them in the knee by not doing so... but what if Microsoft or Sony got promises from publishers that *insert your favorite franchise/developer* would be exclusive to their console in exchange for getting rid used games? Would that change your mind if you weren't planning to buy one? Is this even a plausible scenario?
And before you mention that publishers could lose sales from the other console/PC's, they already delay PC release dates frequently, do crappy port jobs anyway, are constantly complaining about PC piracy and a coalition of popular franchises (e.g. COD, Elder Scrolls, Mass Effect, Sports games, etc.) could strongly tip the scale in favor of their partner console and make up for sales that way.
And before you mention that publishers could lose sales from the other console/PC's, they already delay PC release dates frequently, do crappy port jobs anyway, are constantly complaining about PC piracy and a coalition of popular franchises (e.g. COD, Elder Scrolls, Mass Effect, Sports games, etc.) could strongly tip the scale in favor of their partner console and make up for sales that way.