You just need to expand your thinking when it comes to "adult content".
The pandemic has inspired me with a new Blockchain idea and I'm playing around with some numbers for fun. I've been trying to calculate the value of one orgasm.
I'll be conservative and put a value of $10 each.
1 % of the world population sign up to be sex workers.
And contribute one orgasm per day.
7,000000 people sell 365 orgasms per year for $10 each.
This give a total rough $26 Billion a year. Which seems like big money.
If Sigmund Freud was right and the main impulse and motivation for all human activity at least in the male brain is sex and the desire to procreate. Then the world wide market cap is in the many trillions.
Would readers not agree?