I think unless there's data to back up the claims of "decline of Jav" or "Jav is unprofitable"
it's just internet talk.
No one knows except the studios.
If "Jav is on the decline" that might be a personal issue who taste has shifted.
I know my taste of Jav is still in the early 90's -2000's, and don't find the current stuff to exciting/good. It's just there.
All I see is repeated storylines, porn actresses who's worry more about their surgery than
acting, and old male porn stars who look out of breath.
I'm not sure if there's penetration with these old guys anymore.
The mosiac has become a great tool to fake a lot of things nowadays.
But those are my opinion and some will disagree.
And for those saying "jav is becoming unprofitable" really has no knowledge, unless
they work for the studios and/or have data to support that fact.
Also that's easy to say, when you are getting it for free.
Jav is going no where. And I feel it will have a resurgence when an innovated director is brought in.