There is one very important reason why you don't do this. Why you don't kill the Used Games market. It will result in far less sales... Why?
It may sound crazy but for every good guy like Batman, their must be a bad guy like the Joker.. Or else the superhero is pointless because he is not needed.
-I say that just to say this, -"it's a necessary evil.."
(Sometimes companies don't get this) But a lot of people would not buy a game if they could not re-sell it, hell just the other day I said I was not going to buy some game because I don't know if I will like it. -(but then I said well I guess I could always sell it if I don't like it) -Take that away- that option for consumers and you take away sales -
(I surely would have never bought that game if I would not be able to re-sell it)
I don't know if the big game companies get this or not, but - Used Games - believe it or not are a huge selling factor for Games.
How so, you may ask? Well think about this. Battlefield Bad company 2 sold a little over 6 million copies to date - But BF3 sold 15 million copies to date. You know why, used games. A lot of people who played Battlefield 2 bad company used bought BF3 New.. (people who never would have played it got exposed to it because they either got it from a friend or bought it used)
-you can't buy that kind of advertising- it feeds on itself it makes your game a word of mouth hit... then you add new people to the series and you end up with huge sales.. A game can't get that big without the Used Games Market. It won't happen, the sales of these games will be far less.
They will be stabbing their self in the foot. Someone wrote an amazing article about how movie privacy had increased the sales of movies.. (Sounds Stupid Right) Not really, if you think about it.. When a movie is good and it is pirated, it is exposed to a larger audience then it would normally have. Why?
A guy downloads No Country For Old Men off the net for free, he later buys the Blu-ray.. And he tells all his friends about how good the movie is and they should go see it, not all of his friends download movies - So some go to the theater to see the movie, and they buy the Blu-Ray later when it comes out. They use his review to decide what they go see. They would have never gone to see the movie otherwise.
The week Mega upload got shut down, movie sales shot down, why those people were no longer free advertizing. Word of mouth, is a huge selling factor for Movies. The free advertising went dry. In return Movies were not being talked about and spreading all over. So a smaller audience was exposed to the Product.
And if you understand sales then you know the more people who see your product the more people you have a chance of selling too. Less people exposed to your product = Less sales period.
Killing Used Games Might sound like a good idea in theory, but it will backfire big time in the game companies faces, as they will be force to having far less sales then they would have imagined. The effect of this will hurt smaller game companies.
A Game like Dead Island would not sell 5 million copies, it would not even do 2 million copies.. "Cause and Effect"
Consumers sales behavior, if you restrict a product you hurt yourself in the process, taking away the option to re-sell will stop some people from buying because they will not want to get burnt by a game that they can not re-sell -(so instead of trying a game they will pass) - that alone will kill 25% of your sales..
Not to mention loss of word of mouth sales, which will lead to another 15% in lost sales -your already up to 40% lost now? I can't believe Sony would be that dumb.. Microsoft sure, they have a bad habit of backing seriously bad ideas -(cough, cough Vista, HD-DVD) Let's just hope for there own good they just leave that on the cutting room floor.. Where it belongs.