Old Game Piracy

What do you think about the piracy of old games that are no longer being worked on and are done with. MW2 for example. Do you think that it would be acceptable to pirate a game where the devs of it don't get money from it (I think)

Pirating a game if there is no legitimate way to get it anymore, say some really old or obscure retro game, then I would say it is okay to torrent it.

MW2 isn't that old and yes the publishers and developers get money from every new copy sold.