Yep, they've already done that. You can just google ghostbusters girl power and that's all you get. Similar to them casting Jones; the character she plays, even if it aligns with her type of comedy, (which it does) is so fucking stereotypical token black character. But, they're covered there too. Yea, we totally recast the same role that has been used over and over, BUT IT'S HER COMEDY. THAT'S NOT STEREOTYPICAL.
I'm also fucking amazed that people can call this some type of girl power. Redoing a much loved franchise and just putting females in it is a feminist movement? You're not at all worried that they're letting you walk all over a classic, instead of giving you an original IP that was MADE for you? That doesn't upset the feminists out there?
As far as financially, the budget was 154 mil. So they'd have to make, at the very least, twice that. I also see their promotional shit being in the higher range, if they're already promoting now. If it doesn't make around 400 mil, it won't be a success financially. (I assume anyways, but they seem like relatively safe assumptions.)
Fantastic four had a budget of 120ish mil, and made 170 mil. Which sounds like a profit until you factor in their promotional budget, which I couldn't find a number for, but on bigger budgets can start at around 40mil.
The biggest difference that might sway is that people are straight up negative about this movie, something not even FF could boast.
The only way I honestly see this being "successful" is if the movie is actually not that bad. Granted, whoever mentioned that it was a slow weekend when it releases could affect it, but I don't see them pulling in enough opening weekend to put them on track.