I kind of take an issue with "you don't have a right to sell your copy of a game" bullshit that I've been hearing, lately, because, yes, you do; there's a little-known part of copyright law called the First Sale Doctrine:
"The first sale doctrine, codified at 17 U.S.C. § 109, provides that an individual who knowingly purchases a copy of a copyrighted work from the copyright holder receives the right to sell, display or otherwise dispose of that particular copy, notwithstanding the interests of the copyright owner. The right to distribute ends, however, once the owner has sold that particular copy. See 17 U.S.C. § 109(a) & (c)".
This is an exception to the copyright holder's rights of distribution and is vital for all kinds of media, especially in libraries and schools. Secondly, the used-game sales actually make up 70% of Gamestop's revenue to purchase new games fueling new game sales that directly resonates as revenue for publishers:
Also, according to digital and retail trends, physical sales have been dropping, according to NASDAQ:
"Software sales (including PC) fell 20.0% year over year to $222.3 million, considerably lower than $313.8 million reported in June but higher than $175.1 million reported in May."
Whereas digital downloads of games (especially mobile) have been on the increase:
"According to market research firm Super Data, overall digital sales increased 5.4% year over year to $1.1 billion in July. This was much higher than $841.0 million reported in Jun 2013. Conversion rate improved 2.11% across all categories."
If you still don't believe the numbers and refuse to follow market trends, even Wedbush Morgan Securities analyst Michael Pachter www.cinemablend.com/games/Pach… buried the rumors of used games killing the retail market when he pointed out that, at max, there is an approximate 5% cannibalization rate of used games on the new games market.
The used market is not as big a boogieman that the publishers are whining about it helps people on low incomes to obtain the media themselves and is a hell of a lot better than pirating the game for free. If publishers want to try to force used games out of the market then they will need to do something about their draconian pricing methods, because then the only places we will be able to get cheap games would be on the mobile market, social media sites and digital distributors like Steam and GoG, this means that the sale of special editions, collector's editions and the physical presence of brick-and-mortar stores will dwindle and you will lose a hell of a lot of consumer rights in the process.
The real reasons that publishers hate used games isn't because it's hurting the industry, it's not, it's because they want to be able to control what you do with their games so they can force DLC, DRM, online passes and other needless guff while also maintaining a full market share without having to split it with the retailers.
Publishers don't like the fact that we really don't need them, we actually don't need this middleman between us and the creators and their iron grip on the market that they're so keen to tighten is only going to force people to look elsewhere, eventually, where the more exciting releases that can afford to take risks, like indie games, will get way more sales due to being cheaper and not so tight-fisted about the free advertising they can get from Youtube let's plays, all the while the AAA publishers will only be able to rely on the core gamers, which, as Blizzard's emptying WoW servers have shown, can only last so long before people move onto other things, most likely mobile and social media games which are dominating the market right now.
So, if you really want to keep your rights, keep gaming from turning into this hideous grey blob of designed-by-committee first-person shooters and keep publishers from obtaining a monopoly on the market then you should support used games before they die out completely.