So, a quick bit of searching finds me the statistic that about 50% of movies make a profit. 50% lose money.
True. But that’s lumping all movies together, from big budget to small, from studio releases to indie films, plus a lot of other factor besides.
Movies get released for all kinds of reasons, including losing money intentionally for tax write offs. Others get released because the studio is trying to recoup any of the money they invested. See
The Creeping Terror.*
In addition, just because tools exist, doesn’t mean they get used properly...or at all. Not every studio is going to invest in extensive market research for every film. And a great many films are released without research at all. See the entirety of the output of guys like Tommy Wiseau or Uwe Boll.
Not that all of the little films are losers- see
Hollywood Shuffle.
Certain genres of film are less likely to make money, as well. Action films and comedies are a more reliable risk for those seeking a reasonable ROI than documentaries.
And then there’s the matter of “Hollywood accounting“. It’s a truism In Hollywood- if you want a share of the profits of a movie you think will be a hit, bargain for a share of the gross, not the net.
Coming to America was made for $20m and grossed something like $480m worldwide. On the books, it lost money, and writer Art Buchwald had to sue to get paid. Why? Because there are so many things taken out of the gross for dubiously legal reasons that there is rarely anything left.
* at your own risk! But seriously, if you want to know its sordid tale, ask, and I will reveal.