BULL. S***.
If they can charge 120 dollars for a game, and people will buy it for 120 dollars, they will damn well charge the 120 dollars. You know what would happen if they got a percentage of used game sales? They'd roll in it. Then make the next game, as they were going to anyway.
It really annoys me that game companies think their products aren't subject to the sale rules governing every other product. Automotive and clothes manufacturers don't care about this sort of thing, but gaming has just gotten itself into a spiral of DLC and pre-order bonuses and special editions and multiplayer codes, it's like a race to see how much money they can get out of their players before they start to wake up to themselves. I refuse to believe that game developers are continuously struggling on the edge of existence, oh, they need that extra dollar just to put food on the table.
What's more, even if it is a problem, which it isn't, if the retail prices were reasonable, I'm sure people would buy the game new. As it is, the larger franchises have their hype to keep the buyers buying, but even unknown and not necessarily cutting-edge games are shooting for the same price range, and I think it's ridiculous. So you end up with large games selling by the boatload regardless of their price, and smaller games overestimating their quality and losing customers.
Probably my most favourite point, I have quite a few gaming friends, and not a single one of us keeps all our games. But perhaps more intriguing, not a single one of us keeps the money from a used game sale very long; it goes almost straight in to buying new games. And that helps the industry, because if it didn't happen, I would probably buy 1 game a year, and maybe get one for Christmas and my birthday as well. So that's a pitiful three sales of games amongst a whole family. Good luck turning a profit out of that.
Last but not least, SKYRIM. A single player game that outlasts most multiplayer ones tenfold. Maybe if people thought about making their single player games interesting, people would buy them. 0_0