Yes, its been established in multiple interviews. For every movie a JAV girl makes their income goes in a slow decline until it baselines. I dont know the numbers exactly. When it baselines is usually when JAV girls retire. They either fully retire or go work for the sex industry. Some JAV stars come back because their leave of absence sort of restarted their pay grade.
Lots of JAV girls are coming back because the soapland/sex industry is taking a huge hit from the recession.
yes its make sense
more girls make comeback could mean hmore difficult to make money from other bussiness