So I wrote this whole thing on mobile and Safari ate it, so, here we go again.
We've discussed this before. The issue is Ghostbusters is an special effects heavy action -comedy. When you actually look at the numbers, the original Ghostbusters and Men in Black are special. They are not even matched by their sequels.
From Box Office Mojo (Budget, Opening weekend, Domestic Total, Worldwide Total)
Ghostbusters: $30 million budget | $13,578,151 OP | $242,212,467 Domestic | $295,212,467 WW
Ghostbusters II: $37 million budget | $29,472,894 OP | $112,494,738 Domestic | $215,394,738 WW
Men in Black: $90 million budget | $51,068,455 OP | $250,690,539 Domestic | $589,390,539 WW
Men in Black II: $140 million budget | $52,148,751 OP | $190,418,803 Domestic | $441,818,803 WW
MIB 3: $225 million budget | $54,592,779 OP | $179,020,854 Domestic | $624,026,776 WW
GB2 had less than half its predecessor's domestic take. MIB3 only beat MIB because of a growing international market.
The truth is the comedy film game is hard as hell above a certain budget. Comedies don't make money like that on the regular. Let's take a look at the lists.
Action - Buddy Comedy: The strongest list, led by MIB and Rush Hour 2. But number #6 is The Heat, starring McCarthy and directed by Feig, at only $159 million domestic.
Sci Fi Comedy if all three MIB films and then Honey I Shrunk the Kids.
Horror Comedy is Ghostbusters followed by Scary Movie, with $157 million domestic. Seriously, look at the drop offs.
Comedy films are usually predicated on making money because they have rather low budgets. Once you add special effects into the list, things start to go awry.
A great shot for the Geboot would $40-50 million and $200 million domestic, which would put it in 22 Jump Street and Men in Black II territory. Sony should be damned happy with that. The problem is the budget $140 million (same problem MIB2 had, by the by). 22 Jump Street made
roughly $144 million in profit, since it had a worldwide take of $331 million and a production budget of $58 million. Throw another $90 million on that production budget and a ton of marketing and I think GB 2016 needs around $400+ million, which again, is hard for a comedy.
Even if it's amazing, the film has an uphill battle to profitability and if it hits it, you'll hear Sony shouting it from the rooftops and greenlighting that second GB film and a sequel immediately.
And no, the budget really isn't out there.