There's isn't a nice way to say this, so I won't tiptoe around it, erotic products rely on the viewership/readership being people who view sex as something that gratifies them mainly/exclusively or as something that's mutually beneficial. That's the basis for videos and stories being produced where 90% of the time the same action is provided as there's no alternative. It depends on one's own sexual liberation how diverse they want to experience the subject, and well, we guys usually don't look for different.
The second sore subject is the manticore that is the tug of war between people banning erotic productions and between those who earn their living by less than honorable means. I'm talking about how first the Italian, later the Russian mob sank their teeth into the porn business. One big reason for only offering strict fight videos comes from the fact that where guys openly brag about the conquests they made among women, all the more is it less likely they'll share what they f*p off to by their lonesome. That as a consequence leaves the products in the era before the internet to a word of mouth, keeping it hush on the user end.
California, in general, was different as it used to be the porn capital of the world. It's undeniably true that broadband was a massive loss to producers, but so was joining Western markets with Eastern ones who in lieu of a long tradition of business practices ruthlessly undercut their older competitors.
That brings me to the difference on Hollywood and the European cinema. Where America in the mid-'70s took a turn and to this day allows, say, a person being gutted on the screen to keep an R rating, but anything other than PG-13 sex would force a movie to X-rated theaters. I'd not say that major productions do a good job of depicting catfights, even if it's not a family-friendly movie because they don't have fetish consultants from our circles. In their interpretation, a catfight is solely about clothes ripping until, to paraphrase Seinfeld here, they reach a moment where they might kiss. Maybe the only person who I'd cite as an exception and who's an ally of the aforementioned Julia Louise-Dreyfus is Tina Fey. She wrote Mean Girls based on her own experience, and it's a very bright window into the psyche on just what can tip women collectively over that requires no input or validation from 3rd parties.
Where eroticism was banned overseas, in sunny Italy gialllos have become a major hit. Before Nordic Noir popularized a platitude of red herrings before a detective eventually wound up with the culprit, Italians did it in multitudes, while also not shying away from inserting sex scenes. Though not a Giallo, just a raunchy sex comedy, my favorite scene came from Spaghetti a Mezzanotte (not the food, the sex comedy) where the wife's clothes are ripped off by a futuristic elevator, and the mistress gets fed up with her wardrobe malfunctions and drags her by the hair into the pool where they have a catfight. Germans, Austrians, and Israelis have also produced sex comedies that featured catfights.
So, overseas, neither "public" demand nor "public" offerings had to account for personal taste outside custom videos (and yet, Japanese producers stay ahead of the curve by taking the risk of producing most fantasies imaginable). Thus nobody followed pioneers into widening content. Webcasting actually made things easier, since that way contributors don't fall under SAG-AFTRA protections. Meaning they can invest in cameras that provide HDR footage and not worry about fundraising 100k to produce high quality story content like most web shows do.
