The biggest problem with online porn is the people in it.
If you started in 1998, survived, did well, kissed asses, supported everyone in their flawed theories. you often achieve "Bro" status. People tell you how clever you are, because you told them how clever they are and the business is built on sand.
If you're someone who hits online porn after decades of working offline, direct and indirect, marketing and selling your product and yourself, learning what customers want, learning how to create, market and sell it. And see online is largely producing crap, has no idea what customers want, don't even like to meet customers and can only sell it by giving it to 100s to find 1 to buy (not selling or marketing in anyones book) and point out it's wrong. You achieve Troll status.
Doesn't matter that 12 years later you're proved right. You're still an idiot for calling the idiots wrong.
As they tap away from their living rooms, they think they're part of a big industry. Think online porn made more than offline, then quote production companies figures to prove themselves right, because quoting the retail porn business figures would show their ignorance. Worse still they still think as the ship sinks, throwing buckets of water
into the ship is still going to save it. 
The bright ones have long gone, the clever ones are going. And an old retiree sits here poking fun at them. For the mess they made.
paul why do people spend money advertising paysites on tubes month after month?
Because it's cheaper than letting you send them traffic as an affiliate, because it's the only place left with decent traffic, because many of the sites are owned by the big boys and doing deals with each other, because the idiots in this business want to pay their assassins. Because it's cheaper than making a site that's worth joining. Because throwing gasoline on a fire is the best way to put the fire out.
You really are clueless. Wait till sales on paysites aren't worth buying ad space for, because people can't be bothers to go to the ad to click.