^X-men 3 (pages of) Jennifers Body and Shutter Island are all film scripts I've read before those movies came out and they all came to fruition... What are you talking about?
Shutter Island was a book before it was a film/script. Not to mention a graphic novel adaptation was made as well. Totally different.
Jennifer's Body was another situation as well, as it was Diablo Cody's 2nd script, on the heels of Juno, and everyone wanted it. It was finished long ago and the writers strike caused further delays.
You don't know what you are talking about. Most films have their script leaked online before the film hits the theaters. Some even before they enter filming (MIB3, Dredd, Paul, Thundercats, Riddick 3, Akira, Ghost Rider 2 etc. etc.)
It doesn't really seem to affect anything.
Hrm, let's see..
MIB3 - No brainer; cast already signed; ongoing series
Dredd - 50/50; Already in pre-production unlike Deadpool; Lead signed; script ready; production began
Thundercats - Fan script
Riddick 3 - Another ongoing series; with cast likely signed already -- notice a pattern?
Akira - Canned/shelved. Gary Whitta's first half was already over budget.
Ghost Rider 2 - Totally different from the one that was leaked
Again, what you guys keep missing out on, is that Reynolds hasn't signed on yet. Without him, there's no film. If he walks, they'd stupid to keep a script tailor made for Reynolds, especially since everyone has read it.
There's no director, no actor, just a script. Imagine if Fox decides to push it through, and gets Uwe Boll (just to pull a name out of the air), Reynolds would be locked into the film. There's a reason he hasn't signed on yet.