Doctor VenkmanCJ
If a new film was gonna happen, it would've happened long by now.
Not necessarily. Look how long it took for Indiana Jones. Sometimes things just don't come together at a specific time, it takes 20 years to get things together, lol.
Thing is though, given what we know about the reasons why it hasn't been produced yet, the likelihood dims year after year.
With Indiana Jones, it was a matter that George Lucas and Steven Spielberg were willing, but were also very tired and ended it with Last Crusade, even though they were contracted for 5 movies.
If it were not for the fact that there was still some passion in there for Indy between Lucas, Spielberg, and Ford (who it is always said kept in better shape than most actors his age because he was always hoping for another Jones movie) we probably wouldn't have even gotten Indy 4, whereas it almost seems like the only one with any passion at all for a GB3 is Dan Aykroyd and possibly Ernie Hudson.
You don't really hear Harold Ramis talking about another flick, and Bill Murray definitely doesn't mention GB3, and he's slowly been moving more into arty films in the last few years, but even his outputs been slowing. Rick Moranis, Annie Potts, and Sigourney Weaver are all enjoying their semi-retirements.