Here is where you are wrong depending on what type of used game you are refering to. Is this a "new" used game where the game is less than a month old. In this case the price of a used game is usually barely less than that of a new game and most people will go for the new game on teh shelf and there are only a limited number of used games on the market (unless the game sucks).
If you are talking about games that are > 1 year or so then if the price of a "new" game isn't lowered (singnificently) then people will purchase a used game because people don't want to spend a lot of money on "last year's" game. The publishers already made a majority of their money and if they want to make more money then they should lower the price of the game.
* they are not guaranteed to sell that much more units because of the price lowering, and they would have a lower income from the game sales => loss
Welcome to the real world. There is no guarantee that they will gain money if they force stores to give them a slice of the profit. There is even less reason for stores to sell new games from that publisher or any games from that publisher at all. Stores arn't forced to buy or sell used games, nor are they forced to buy or sell new games.
Publishers have very competent people in the economical/financial/marketing field, if this was an appropriate answer it would have be done for long.
You could clean a mansion in a single minute with a sweeping generalization like that. Guess what, companies make mistakes.
If the current model isn't sustainable, it's logical to make it evolve.
We finally (sort of) agree on something.
If they find a way to prevent used games being resold they will do it, and i'm all for it, I just hope it won't be too late.
Either you are extrememly ignorant/stupid, work for a publisher, or like having somebody take more money from you (which is exceedingly similar to the first item). Also, since you arn't thinking of everything, what are people going to do with games they don't want anymore? Hey, lets make more trash to throw away. (PS: CDs/DVDs are made of plastic which is strangely enough made from oil. Which, last time I checked, isn't a non-renewable resource and is in great demand (strangely enough raising the prices).)
Nintendo claim that the revolution will be a safer plateform to develop for, because of the budgets that are supposed to be lower, it could help too, and if it helps lower publishers to survive and allows for some interesting original lower-budget titles i think it's great too.
Safer? How will it be "safer", less piracy? Piracy has nothing to do with used games (unless you think everybody who sells used games first copied the disc and then resold it). Oh shit, if publishers spend less money making a game then they'll have more of it? I think you finally see how publishers need to change to survive.
It's the little companies that are suffering the most.
Won't somebody think of the children.