The problem is that developers doesn't earn anything from used games infact it causes them losses.
Take next example:
Some person buys new game for 30$ and plays it for about month. The he sels that game to used game store for lets say 5$.
This store now sels this game to some other person for 20$.. This person then playes this game for about a month and sels it back to the store for 5%
The store sels this game again to another person for 20$. This can go on and on. And everytime the game gets resold developers lose potential ernings.

So should be selling of used games banned or not? On my opinion it shouldn't be generalized for everyone. I think tghat best solution would be that developers themself decide wheter the game could be lately sold to another person or not. You can simply state this in EULA (End User Licence Agreement). For instance just take a look at Windows EULA. From what I know the only way for a Windows coppy to change the owner is through inheritage. You can't sell it, you can't lend it, heck you cant even install it on another computer after it has been already activated. Maybe through some deactivation process I'm not sure.


As for in general I think that game developers should lower the prices of most of their games especially big gaming houses.
Who is prepared to pay 60$ or even 70$ for one game which he might turn it ower in a weak. If your game doesn't have much replayability it is "crime" to put such high prices. In such case I rather wait a year or two for prices to drop or even to get the ability to buy game second hand if the comany selling the game still insists with to big prices for to long.

Now I understand that it is hard to sell some game for small price especially if you spent a lot of money developing it. But to high prices only increase priacy of such games.
Why Indie comunity thrives so much lately? Mostly becouse Indy developers provide their games at reasonable prices. ANd the price of Indie games actually reflects the replayability value of the game and not how nice graphics and how many special effects the game has as it is with most AAA games.