Presumably people would consider a Song of Ice and Fire sequel by GRRM to be "official" and everything else "fanfiction", even if the fanfiction manages to appear in bookstores
Just in case you're actually unaware, the Organization for Transformative Works https://archiveofourown.org/ Archive Of Our Own (typically shortened to AO3) is where a tremendous amount of such fiction is archived.
Someone who buys books at Barnes & Noble is not going to print online fan fiction on demand. If you think this is something a “mainstream consumer” would do, I think you’re very out of touch with the average person.
Isn’t reading stuff on the internet more mainstream than buying things at Barnes and Noble? Not necessarily those specific things, but the notion that something needs to be physically available at a bookstore to be relevant is at best dated.
I think you should also assume it's called "Archive of our own" because of the same sense that Woolf had in "A Room of one's own". This is our space to do our thing, precisely because if it was someone else's space sooner or later they, at least ostensibly for good reasons, prioritize something else over our thing and it's destroyed.
So it's at least not at all a coincidence that AO3's authors are predominantly women. This story of assuming that they can thrive in a shared space and then discovering that, again often for ostensibly good reason, they're not welcome to use it after all, is very familiar to women. Whether you're being thrown out of a cafe for breast feeding ("Nudity, not allowed") or turned down by employers despite having the same skills as successful male candidates ("Bound to have kids and then we'd just have to replace her anyway") it gets wearisome, better to have a place of your own.
That's an interesting perspective, I hadn't considered that the name might be a reference to A Room of One's Own.
My understanding was that the whole "of our own" thing is mostly in reference to fanfiction sites going through a predictable cycle of becoming popular followed by overmonetizing, enshittifying and losing touch with the community, which means everyone migrates to the next site which becomes popular and repeats the cycle. Hence Ao3 run by a non-profit "of our own". But that might not be the only way in which it's true. I would certainly agree that it is somewhat of a safe space for all kinds of disparaged groups, women in general being the biggest of them
This is not an endorsement of the work, but there's Harry Potter and the Methods of Rationality. I hear 50 Shades of Gray is another fanfic that went mainstream.
A book nerd could come up with a much longer list, but I know there's a ton more illegal unlicensed! Harry Potter fan fic.
“The Fifty Shades trilogy was developed from a Twilight fan fiction series originally titled Master of the Universe and published by [E. L.] James episodically on fan fiction websites under the pen name ‘Snowqueen Icedragon’.”
as much as I think the copyright 14 years thing is one of the more contemptible ideas well to do programmers have on how to improve things by making things worse for people who make less money, I don't think copyright is longer than 14 years is the only reason works by the original author of a series earns more money than fan fiction.
