Total and absolut BS, you expend X amount of dollars to make and publish a game, then you sell X amount of copies at X price tag, to recoup all of what you expended and after the breaking point of expenditure/sales you start making money, if the game sells good enough you could be making money for a LOOOONG time (ask Nintendo if you dont believe me) if you dont sell enough copies to recoup then you have a loss (just like hollywood when they make a 100 million movie that only makes 30 millions in box-office, some of this movies may never "gain" money, even after digital distribution, PPV, Cable, TV, and BR-DVD sales)
sure every used copied resold dont make the publishers money, but unless the mediun goes completely digital (i.e downloaded games) you cant stop this, most people have to sell games to afford new ones, and some can only afford them used after months and months of waiting for the used price to go down.
what publishers should consider is cutting the new game price faster, i mean sell it for 3 months at full price then slash it in half so people would buy the shiny new original instead of the crappy used one, i for one would be happy to wait 3 months for a half price saving, and hold off off buying the used ones. this is the only way for them to take the used games market.
And reason number two, altough is very true that publishers dont make money from used games, they also DONT MAKE MONEY FROM YOU KEEPING THEYR GAMES FOREVER, if you hold on to every game you ever bought your not paying anymore from it, right? so theyr bitchin about a money thats never gonna exist (and dont give me that BS reasoning that every used game sold is one less new one sold, is like saying that EVERY person who downloaded a song from the internet is one less person who bought the CD, is just UNREALISTIC thinking), if somehow somebody pass a law that makes illegal to sell used videogames (kinda fascist if you ask me but it could work if they put like a time limit, say you cant sell a game for a year after you buy it or something like that, it would certainly break the back of gamestop and such and the used game would become micro-transaction like in the old days where you would sell or exchange your games whit your neighbours and family)