I believe these guys are producing their own porn they are staring and sell or give license to the distributor. Just count on HIKR series, In the early days of this AMWF series, the actors like 'Tomohiro Abbe' (together with 'Dango') were featured in almost every episode of AMWF series. Due to the high cost of international travel or to invite pornstars to Japan/Asia were still expensive at the time, so the series like this are seen as premium content in their era. For the star herself, it opened an opportunity to be exposed to a new niche market. Just look at for instance, Melody Marks, In the past Kiara Lord, Abigaile Johson, Mia Malkova, etc
Also, do not forget, this AMWF genre could fulfill the niche market of Japanese/Korean Asian or other people who want to see creampie in a young good looking white girls. It is the same thing goes when western guy want to watch Asian Porn or go to Thailand, Philippine for sex tourism, as having sex with another ethnic might be seen as more exotic as there are not as many as Asian Porn compared to western porn in their own countries.
Advancements in video editing and casting, affordable traveling cost have made it significantly easier for people to get involved in the AMWF industry.
In my personal opinion, what is needed in the AMWF porn industry to remain competitive is an innovative idea, to bypass the requirement for mosaic, blurring in Japan/Korea . This is doable for instance by moving their production companies outside Japanese territory. That is what Kin8tengoku series have been doing.
