...if I can add my small bit of POV...
The author rights issue in porn is no different to any other form of entertainment/culture. Music/film companies have found their way to survive (albeit maybe not grow at the moment) even in the wake of everything being available as direct download (without the torrent mess). So I feel no disaster is coming our way.
The great great Grateful Dead have made (staring from the late sixties) all of their concerts free to be recorded, they reserved space for the guys to bring their apparratus, mikes and even connect to the mix. All for free, just a ticket - 1-2$ at that time. They started their own music label and sold their records relatively cheap too.
Every music company loser now would say this is a suicide, everything circulates for free. But hey, they managed to make money and quite a few! The community grew so fast, they could run a couple of hundreds huge concerts each year and even feel like ambassadors of free enterprise.
I believe the analogy to porn is that producers have to create a mix of products/services (establish different revenue streams) - same as legacy PC companies (HP, IBM) are doing - not just to sell the product itself (e.g. DVD, streaming video) but service too (yes, I'm pointing at zuzana.com/superglam.com and these kind of ventures). This is a true interactive porn, not the lousy 3 items int. menu on a DVD, at a single click have the actor come to your home and do some acting
They can even view the product as a tool to only leverage their target business (companion/escorting) as HP and IBM does with HW (and even more SUSE with Linux which is totally free).
All companies nowadays are proclaiming a turn to a "service company" - let's see how the porn mastodonts will manage this - if they have enough brains, which (IMHO) majority of them does not have.