I was just thinking about this the other day.
Let's say that “Ghostbusters 3” was produced by the same people that gave us “American Pie”, for example. The script would be written by a “teen comedy film” expert. The cast would be the “big” names among young actors right now (take your pick of ‘em, it doesn’t really matter for the purposes of this theory.) Harold Ramis and Dan Aykroyd have very small cameos in the beginning. The “new” Ghostbusters would tool around busting spooks in a lowered white Cadillac Escalade, bumpin' the $2,000 Sony Xplod stereo system. There would be sight gags and filthy humor galore. The words “From the People who Brought you American Pie!” would prelude the trailers and be plastered all over the movie posters.
The movie would probably be a runaway smash hit. Why? Because young people/teenagers would flock to see it. Sure, us Ghostheads would cry foul, but it wouldn't matter. Thrilled by the promise of more cashflow, Sony would probably release a “Ghostbusters 4” the following summer.
Sad, but probably true.
—Ecto1A