Like I said, bootlegging with a slightly more limited supply.
Not only Rydian is right, the authors of the program already recieved their share whenever a used game is bought.Botlegging involves the creation of additional copies, used sales don't.
There are differences here Veho, you can;'t pretend they don't exist.
People treat Software as if it was a sandwich - it is not quite so. Person A bought Game/Program, a certain part of the money goes to the developer who in turn gives the purchaser the right to utilize said Game/Program. Then, Person A sold it to the store which in turn sold it to Person B. Person A relinquishes his or her license to use the Software in question in favour of Person B. Moreover, it's not entirely certain whether Person B, or C, or D would even *buy* the game in the first place if he had to buy it for the full price.
You can't pay the developer two times for the same license. A license is not expandable, it's not like a sandwich that can be eaten only once - it can have multiple subsequent users, like a car or a house. When you buy a house, do you have it demolished and have a new one built on the plot? No, you look for a house that gives you the best balance of Quality and Price - if you wanted to build a house from scratch, you'd likely just buy an empty plot of land.
Not to mention that some companies give DLC which works only on video games that were purchased new and registered, effectively crippling the copy DLC-wise for the users which may buy it pre-owned later on, which is *perpostrous* and *unfair*.