Why (apart from money obvs) does Ghostbusters need re-making?
All of the fictional characters in every theoretical universe have now been used. There are no more left to be invented or imagined, except by Chuck Tingle. This leaves studio executives and writers with only three viable options:
1) Re-make everything, again and again. This will become more noticeable over time, but it already fairly obvious in the case of Batman. The phenomenon of obsessive fan-service will also make each successive re-make even longer and more tedious, as JJ Abrams (yes, he will be indeed directing all of these by 2019) crow-bars subtle references to Batman: The Dark Knight Rises A Third Time into Batman: The Dark Knight Sleeps Upside Down.
2) Make films about combinations of the already-used characters. This will again become odder as time passes. For now we have Batman vs Superman, but by 2035 we will also have Tintin and Mad Max Crash Weddings, The Curious Incident Of The Dinobots In The Night and Gollum vs Batman: Redemption.
3) Adapt the Erotic Fiction of Chuck Tingle. By about 2040, it will become obvious to everyone that this is the only way to go. Most Tingle adaptations will feature clones of Ryan Reynolds and Taylor Lautner in the lead roles. Obviously, Andy Serkis will play the Living Leftover Chocolate Chip Cookies From My Kitchen Cabinet in the film version of Slammed In The Butt By the Living Leftover Chocolate Chip Cookies From My Kitchen Cabinet and also the Gay Living Donuts in Glazed By The Gay Living Donuts (Yes, these are real titles)
🙂