Although I agree with this viewpoint, there are groups like the OTW which make the argument that all fanfic is inherently transformative. (See the "Legal" section of the FAQ I just linked to.) Despite being started by lawyers and making this argument in a variety of venues, however, they haven't launched a test case themselves, so I would ideally like to see an on-point case about genre fanfic itself to definitively settle the issue in US case law.Profit or lack thereof is irrelevant with regard to copyright infringement. Even if a fan film or a piece of fanfic never earns a cent, if it uses copyrighted elements without permission, then it is an infringing work. Consequently, the not-for-profit angle as a defense is a guaranteed loser, based on statutes and case law precedents. U.S. copyright law is not forgiving in the least.I'd heard the lawyers were already putting together a not-for-profit defense, I was thinking this might actually finally end up creating a test case for defining fan-creation bounds in terms of fair use.
Similarly, the OTW also launched their own archive of fanfic (with the motto "We own the ***damn servers!") that wouldn't automatically respond to DMCA notices. Having said that, I don't know how many they might've received since then or what their typical response is.That's what DMCA takedown notices are for. CBS could destroy the fan film community with a few dozen scary form letters. Fanfic would be a little more time consuming, but having an intern trawl the major repositories and send out a weekly DMCA request wouldn't be that expensive. I think there are even companies that specialize in that sort of thing.^ I suspect that, in some cases, there is also a financial consideration: It simply isn't worth CBS's time to pursue every small-scale infringer; the legal costs would be prohibitive, and most of the parties are insufficiently capitalized to be able to pay damages.

To me, those are very counter-intuitive definitions of derivative and transformative.