There are no rules as to how a movie "works".
Wrong. There are very strict rules to how a movie works, which are even stricter that the rules to how fiction in general works. Screenplays (at least ones that the writer hopes to ever have made into TV episodes or movies) are expected to follow a downright draconian format compared with the much looser rules governing novels, but there are overall rules that always apply, even to novels such as: the audience/reader must sympathize with at least the main character, at least in some way if not totally (otherwise they'll get bored and find something else to watch/read); the drama must be driven by some kind of conflict; don't have your characters do stupid or implausible things just because you can't figure out how to get the plot from point a to point b otherwise (unless you're going for a surreal or comic effect); and put all the information the audience/reader needs to understand the story into the story. I'm still amazed that George Lucas didn't even manage to do that last one, which is so fundamental and obvious that it isn't generally listed as a rule per se.
The notion that there are no rules to how a story works or doesn't work is just flat-out silly. It's true that adventurous writers
who have already mastered the rules can start breaking them. This happens a lot more often in novels than in movies and TV series, simply because novels are cheaper to produce and the consequences of the rule-breaking inhibiting their commercial success are much less dire. If you want to send a rule-breaking screenplay to a studio and hope to get it made, your name better be Steven Spielberg or JJ Abrams.
And I'm just talking about the rules to writing screenplays and novels. Obviously movies have rules in other areas as well - music, cinematography, costuming, hair, makeup.
Anyone who is unclear about the rules should read these two basic texts, just for starters.
Then come back and tell us how there are "no rules."
The Art of Fiction, John Gardner
Screenplay: The Foundations of Screenwriting by Syd Field
(just like nuTrek, or Transformers, or Twilight, or Avatar, or Dark Knight, or Harry Potter, etc...)
Read Syd Field and it will become abundantly clear how all those movies, plus every other one you've ever seen, follows the rules in lockstep formation. Even bad movies generally follow the rules; the rules don't guarantee a movie won't suck. George Lucas is a very unique entity in that he owns his own studio, without even a board of directors or a CEO to boss him around, and can make movies that suck because they break the rules. Maybe if he'd followed the rules they would still have sucked, but not as catastrophically.
The PT movies would never have been made at a "normal" studio that is driven by profit motive rather than the whims of one guy. The screenplays would have been revised to at least bring them up to the level of acceptable craft. They might have been just the usual crass, commercial crap like the
Transformer movies, or the normal type of misfire like the last
Indiana Jones, but even that would have been an improvement. The PT movies have gone down in film history as truly unique in their awfulness, and badness on that scale will never be seen again, unless Lucasfilm does it.