Same could be said about The Matrix, Star Trek, Starship Troopers, Tron, Alien etc etc.
A lot of great movies that has interesting storys and has potential to do great games. But after a few "bad" ones, people forget and move on. --- I don't replay games. All I ask is that a game be worth playing in the first place.
I actually enjoyed Atari's Terminator 3: Rise of the Machines from the last gen. Sure it being practically Fugitive Hunter re-skinned and properly coded helped the R&D process, but it was an enjoyable game at the end of the day.
I also enjoy Virgin's Master System/Game Gear Terminator, despite not getting far into it.
Good games do exist, problem is that it gets wasted by most publishers.