The porn industry will never die, men need it to jerk off to.
The way people view it has changed in the last 50 years. I might be out on a few dates so please be kind.
1957 = It was a few 8mm films, photographs and the written word
1967 = The porn industry started to flourish in Holland and Denmark.
1977 = The video era was in full swing.
1987 = I was selling videos mail order, major leap.

1997 = Porn on the Internet.
2007 = More porn than you can possible ask for, 8mm, photographs, VHS are dead, DVD is dying and the future for many is going to be different.
But one thing runs through the last 50 years as solid as you could wish for.
THE NUMBERS OF PEOPLE CONSUMING PORN ARE GROWING.
And maybe they are not consuming your porn but that are consuming porn. A good move for the future would be the processing companies demanding we only sell DRM. It would need something like that.
But the way we sell porn in 2017 will be very different from today. Mutt I think from many of your posts you are suffering today. Stop and think about how you sell tomorrow to make sure you're not flipping burgers yourself.
I'm a producer and what ever happens we will survive. Even if the free sites close down paysites they will need to buy porn, they can't keep rotating what they have.