Well, I'm not here to debate the finer points of filmmaking--though I absolutely disagree with much of the technical information offered in this thread.
I think why I'm so interested in discussing the question (which, interestingly, seems to have inexplicably touched a nerve with several users) is because it's something I've been grappling with the past year. I've spent the past 6 years, post-college, honing my writing skills and after four completed screenplays (and countless revisions), I've finally arrived at a finished script I feel is worth showing.
After spending most of a year on this particular script, I find it hard to swallow the thought of giving my power away as a creator by waiting for someone else to "discover" the "magic" of my writing. What I have found, though, through a limited attempt at producing my own work is that many people seem more inclined to jump on the bus when it's moving, rather than when it's idle with no one aboard.
But like many others here, I have a family to support and am not inclined to be foolish by completely tossing reality to the wind. I'm not even certain it's something I would enjoy doing. I'm just curious as to why more screenwriters do not attempt to produce their own work, and if there is some sort of facade created by the film industry that makes them think they aren't capable.
(If you have no interest in ever making a film then, clearly, this thread is not directed at you.)
Okay, first you have to answer another question.
What do you mean by a "writer?"
After a good many years, I can actually say without even wincing, that I am, in fact a writer. In fact, I'm a screenwriter.
I can say this without wincing because when I fill out my taxes and I have to write down my profession on that line on my tax form -- that's what I write.
Screenwriter. That's how I earn my living.
Now, there are lots of people who sit at word processors or scribble on yellow pads -- and maybe even what they write might be quite good -- but in what sense, other than that they physically write things down -- are they "writers?"
I guess the question I'm trying to make you think about is this:
If I, personally, had written twenty novels, and never sold one, would I be justified in referring to myself as a novelist?
And if I'd written twenty screenplays and never sold one, would I likewise be justified in calling myself a screenwriter -- as opposed to someone who works at a bookstore (or wherever I happen to work) who just happens to write screenplays in my spare time?
That moves us to the next question.
Are you asking why professional screenwriters don't more often become producers who produce their own work -- or why *unproduced* screenwriters opt to produce their own work because they can't sell it?
In the former case, especially in TV, crossing over from writer to producer is the natural professional progression. It doesn't happen to everyone, certainly, but most showrunners and producers working in television started out as writers. In motion pictures, it's less common, but still happens. More frequently, screenwriters tend to aspire to jockey what leverage that have toward a directing shot rather than toward producing.
Why don't they want to produce? Because if you have any significant experience in the business, you know what's involved in producing -- and it is an extremely challenging job, and a very specialized one. I am a very good friend with a producer and I couldn't begin to do the things that he does when he goes through the process of producing a multi-million dollar motion picture. Budgeting, breakdowns, tax incentives -- not as abstract things, but actually knowing the specific people to call, the places to call -- who to call in New Mexico, or in North Carolina, or in New Zealand, or in Australia, to find out where it's cheapest and who's offering the best tax incentives and give backs and what the crew situation is like and what the location situation is like and will you be able to get the studio space -- and the rest.
If I had to produce a movie tomorrow, would I be able to do that? No way in the world. But he's spent over a decade in the business working as an assistant for Scott Rudin, among others, learning how to do it.
More to the point, he wants to do it. This is the work he likes to do. He wants to be a producer.
And that's great. If I'm going to make a movie -- I want him producing it. Not me. Because he'll do a much better job. On the other hand, he has no particular desire to write screenplays. And that's okay by me too.
But, stepping back -- if you're talking about producing a movie yourself -- not because you want to be a producer, but because --
a) you couldn't get anyone else to buy it or --
b) you don't want hollywood "screwing up" your screenplay --
Both of these are bad reasons to produce your own movie.
First, if you couldn't get anyone to buy your screenplay, there's a very high degree of likelihood that, having either spent your own money or managed to raise the money somehow and produced it yourself -- you're going to end up going back to the same people who, a few years earlier, didn't want to buy the same project when it was a screenplay.
Now, unless, between then and now, you managed to convince Brad Pitt to be in your movie for free, it's unlikely that they will have changed their minds. Those that didn't want it then probably still won't want it.
The difference is -- you will have spent a few years of your life and a lot of either your or someone else's money.
Second -- if you're afraid of other people screwing up your movie, rest assured, if you set out to produce (never mind direct, if you intend to do that as well), without having any real idea of how to go about doing it, the damage that you will cause your project, even intending to be as faithful to it as possible, will dwarf the damage that even the most crass producer will cause to your gentle love story by turning into a tale of Big Breasted Wrestling Amazons in Outer Space.
Just as a person who doesn't know how to write will not be able to sit down and write a screenplay or professional quality, so a person who does not know how to produce will not be able to produce a motion picture of professional quality.
Why would anyone believe otherwise?
NMS