Seriously harmonica, you need to understand the business a little.
As chilipie points out your examples are way, way off.
Do you honestly think that “United 93” was made because someone
(an actor auditioning, a director or producer reading scripts) saw the
script for “Flight 93” and thought, “I can use that same story!”? You
really think that is even a possibility?
And you feel that Dan Gordon and Lawrence Kasdan discovered the
story of Wyatt Earp only after reading the script of “Tombstone”?
Are you sure "Tombstone" wasn't "stolen" from the 1946 film "My
Darling Clementine" or the 1939 "Frontier Marshal"?
How about a few examples that address YOUR fear - an actor at an
audition reads a script, loves the idea, writes a script based on that
idea, gets it financed and produced and released before the original
filmmakers does. You know of that happening? Or someone on a
message board reading a script and making the movie before the
writer/director can get it made. You got one? Just one?
And please learn a little about companies like The Asylum. chilipie is
correct - they see a hit movie and very quickly make a rip-off. They
have been doing that for years - I have written and/or directed several
of them. But they make their rip-off AFTER the original movie in in
the theaters. They have never ripped-off an idea from an actor auditioning
and stealing the idea. Do have any idea how many “Blair Witch” rip-off’s
were made? I know of at least 10 “Paranormal Activity” rip-offs. I
have seen well over 20 “Resevoir Dogs” rip-offs.
Have you ever seen John Sayles excellent "Jaws" rip-off?
The day the first trailer came out for “Snakes on a Plane” was released
I got a call from The Asylum asking me to write a rip-off of that film. Not
based on reading the script or any idea other than the title - and they
couldn’t afford a plane set. So I wrote a script called “Snakes on Cocaine”
to be shot in the jail set they happened to have.
You’re right, there is plenty of idea copying and there is a lot of competition.
But what you fear has never happened. Ever.
I think I might post some of my first 10 or more pages on here to get feedback once I'm done maybe.
Do not post random pages for feedback. Finish your script. Then offer it to
people you trust for feedback.