In an ideal world the original purchaser would remove the game from their computer completely, leaving them free to sell the software and license to someone else. However, is anyone naive enough to think that would actually happen? More often than not, the original purchaser would still have the software installed when they sold the disk. The only practical solution is to have a non transferrable license, then whatever happens to the disk is irrelevant as the license remains with the original purchaser.
or, we go back to requiring the disk in the drive to play the game, AND, when the game is uninstalled a unique key is generated that allows the game to be reinstalled.
its late where i am so perhaps someone can oblige me with a quick n simple answer, but why are movies and (even more so) games subjected to so much more 'anti-piracy' conditions than other forms of media? for instance, i can buy a book or even a board game (going back ages here =P) and then resell it to a book shop or second hand shop, or even donate it to a library or similar without any sort of DRM or anti-piracy?
i mean, im sure it has something to do with intellectual property and what not... but isnt any creation some sort of intellectual property? a car that uses a revolutionary style or engine or entertainment system or whatnot, is bought by the original owner, then said owner re-sells the car to a car yard or new private owner, why is there no anti-piracy laws? the car manufacturer gets no royalties? if the only reason is that a movie or game can be copied while a car cant, well, fine, create measures that require the original to be 'destroyed' upon selling to a new user. as i said above, if re-selling to a new owner, a new serial key is generated once the original install has been removed, thereby transferring ownership in every sense.
but, like Fuzzy said, why should the companies bother? they wont make any money from it and in the end, its all about money... though if actors etc had a little less money im sure it wouldnt really stop the world revolving...