What happens some times that I do think is pretty unethical by producers in the industry is when content is either recycled from the same website they have pulled from their own website earlier, or they have quit producing new content for a while, like say a performer that used to work for them the website is based off of quit working for them or retired from the industry years earlier, and they aren't upfront and don't tell people that and pretend they are creating new stuff like before. All the while they will continue to charge people the full normal price or close to it as when the website was operating normally.
I don't think they should give their material away for free. That's unreasonable. However, I do think it's reasonable for them to be transparent about how their business is operating with regards to who is currently working for them and the actual new material they are putting out. To not do that is deceptive.
At some level I do understand why somebody wouldn't want to pay full price for material that is years if not decades old. It's like going into a retail outlet and picking up an old classic movie in the overstuffed discount bin. Sure some of them might even be among the greatest movies ever made and notable classics, but I'm probably never going to shell out the cash picking up a DVD of a 20 year old movie if it cost the same as a newly released blockbuster. There is a reason they are discounted. I'll pay a few bucks for it, baring unusual extenuating circumstances. The same goes for things like video games. I'm not paying full price for something that came out 10 years ago no matter how good it is. I don't expect porn producers to give away their intellectual property for fee. I even think they should be allowed to charge what they want for it. On the other hand they just shouldn't expect people to pay what they did when it first came out, and shouldn't be upset when people no longer buy their product if it's too much for them.
If their business model has changed with the times, and associated cost make that not viable for them, I don't know what to say, but I'm not going to overpay to keep them in business as harsh as that is to hear.