They are fair use because no one is going to mistake a parody for the real thing.
Nobody is going to mistake a file with "A Star Trek Fan Film" as the real thing either.
I think you're being disingenuous with your "why would they be identical?" You know fan films aren't copying the exact thing. But, they ARE trying to look and feel like CBS/Paramount's Star Trek. Fanfilms are going to great length to look like professional work that could be mistaken for the "real" thing. Look at Star Trek Continues. The whole point was to look like an episode of the original.
If they weren't recognizable as being part of a franchise, they wouldn't be fan films in the first place. They'd just be films. With fan works, building on the franchise is what defines them as fan works. To suggest that they somehow stop being fan works at some point because of their level of quality and professionalism is absurd, and excludes anyone who actually knows how to do something.
These derivative works are copying the look, the tone, in some places, the characters of work they don't own.
All of those things are present in many commercial parodies. Furthermore, look and feel aren't necessarily copyrightable.
And you know that. So, again, I think you are being disingenuous.
How so?
But, that's not an argument why a copyright owner should allow derivative work without being compensated.
No, it was an argument about your hyperbolic use of the word "identical". (This reminds me of the Futurama joke about the four identical pyramids, each one even more identical than the next.)
1. Carving out an exception for fan films might complicate pursuing copyright theft. Carving out a exception would give someone a legal argument to defend their theft.
Two points. First, if it's a legitimate defense, then they're not guilty of copyright infringement, let alone criminal theft. Second, your argument for not making a fair use exemption for fan works is applicable to ALL fair use provisions. You might as well say that we should never add any fair use provision of any kind.
Oh, and it's "an exception", not "a exception", so according to
@urbandefault, I no longer have to take you seriously.
2. "Fear of a fan backlash." Can you provide an example where there has been a fan backlash when a copyright holder has put an end to copyright infringement? Oh, sure, there were a couple of fans that are upset about Axanar... but, do you really think that was a blip on anyone's radar?
We're talking about a law that affects all copyright holders, not just CBS. Are you saying that no company of any kind can be hurt by a fan backlash? Besides, if you look at Axanar specifically, why did they even settle if they weren't concerned with public relations?
Sure. Still. The fans that sign a petition like that? Idiots, who really should get a fucking life.
Well, my intent was to show that large numbers of fans can mobilize when they have passionate feeling about a franchise. I wasn't trying to say that they were always right or acting in an intelligent fashion.
GREAT! Then maybe that's the new thing you could like! You could help them with their Kickstarters. You could support their original content. That would be a great thing to come out of this. New original stories, owned solely by the creators.
Broken Window Fallacy.
Maybe instead of advocating for a carve out in copyright (which isn't going to happen) you could seek out those who have experience making fan films and help make something NEW. Something exciting!
Don't see why I can't do both.
Wouldn't that be a better use of your time and energy than shouting at the clouds?
By that argument, any discussion of law that doesn't result in legislation being passed is worthless.
Are you able to provide any sources for this information? It would be fascinating to know how much money wasn't made from tickets that weren't sold to people who didn't like or weren't going to see the film anyway, from before the movie had even been released!
I guess it's fair to say that I haven't established a causal link between the poor user rating on Rotten Tomatoes and the lower box office of The Last Jedi. Perhaps I was unduly influenced by the fact that my sister didn't go to see the movie in the theater specifically because our cousin said he didn't like it.
Top marks for taking my quote out of context!

But as I said originally, the only reason that fan films have run into restrictions in recent years is because of the increase in public fundraising and dissemination of those products.
That would make sense if most of those restrictions had anything to do with fundraising or dissemination. The real problem is that CBS failed to provide guidance for a very long time, then suddenly provided guidance that was entirely inconsistent with precedent. And they know this is the case, or they wouldn't have explicitly grandfathered in previous fan films.
Fan films should primarily be made for the enjoyment of making them, shouldn't they?
Who are you to decide what my motives should be for making a fan film? If someone make fan films for the admiration of their peers, or to refine their skills in film production, or to meet people they may want to work with on other films, what's wrong with that?
BTW, I'm not advocating that they should be an underground activity as you suggest, but why should they get the full rights to be broadcast indiscriminately?
Let me turn that around: Who should I be denied the opportunity to see a fan film? If your answer is that I shouldn't, then doesn't that reasoning also apply to everyone else? To everyone on the Internet? Or is your argument that everyone on Earth can privately email a fan film creator requesting the he/she individually mail them a DVD for no charge?
These are, ultimately, hobby projects made with somebody else's IP. They are not original works of art.
And yet they're frequently the result of thousands of hours of effort and a great deal of creativity. In the case of fan films, they often represent a significant financial investment by their creators as well. Does it make sense to extend
absolute rights to the copyright holder just so they can fail to use them the vast majority of the time while leaving these work of great time, energy and fortune completely unprotected?