Honestly, there must be something to it. I wouldn't say I've watched more JAV (in hours) than Western porn but most of the best stuff I know is from JAV. I tried to put someone in the western porn against my JAV actresses of choice, but even then, if I somehow could choose, I would choose the JAV counterparts:
- Best throats (e.g. Sasaki Aki, or Tsuno Miho, or Kaise Anju vs. Violet Monroe, or Bobbi Starr, or Anette Schwarz... lots of good throaters in the West, but... damn, Japan, you're exotic; I especially find Miho sexy in this sophisticated way: that face, that beauty spot, that slender body... and Anju is the same: she has this aura of demure whoriness to her — not just sluttiness but pro-level allure and skills)
- Best tits (there are lots and lots of great tits in the West, but I'm still obsessed with Kaho Shibuya's: it's not about the size, not about the areolas even; it's the fact that she's so small yet has such huge ones... and yes, she's just Japanese)
- Best asses (now that's the most arguable one, but there's Tsukada Shiori, and she alone is enough for me, especially considering how rare big butts are in Japan)
So, I totally agree, Japan might be doing this on purpose: get off our island, 外人, we won't let you in even digitally. At the same time, a degenerate* like me finds a lot of comfort in the fact that even if you're Japanese, even if you're an AV actor, there are not more than a few thousand men who have touched, got sucked off and fucked Aki, or Miho, or Kaise, or Kaho or Shiori. Even if we dial up the number of men they had to 10K, it would still make the probability for Japanese men to get to them only ~0.01%
And even if you get one of them, the dream is to have a go with every one of them. And I might be a degenerate but I also remember how probability works: the probabilities multiply in this case. So, the probability to f...ck all three at some point, Aki and Kaho and Shiori (which is like my "dream minimum"), is actually so low that practically, there are not enough Japanese men to fulfill this dream even once
And yet, there might be a guy out there who has done it. Probability can be one in a billion, but it might still have happened
* This words rubbed off on me since I've been reading a lot of what you write, and it describes perfectly how I feel about JAV specifically sometimes: not even jerking off to some humiliation JOI makes me feel this way