You're so full of crap. You can walk out your door and for a couple hundred bucks start gathering data.
Do you know of no one who works in that economy? Do you know of no one who has availed themselves of services from that economy? You probably know more of those people than you think...
Simply out of my acquaintenances that I know who have worked in that economy, I know exactly 2 who worked it specifically for the money and then got out well--not rich, but they used their money to bootstrap themselves to something else. The rest got sucked into it and got used up by it and definitely didn't come out ahead. That's >x10 right off the bat out of the people I actually know. So that's the bottom estimate.
If I match against the stories of the ones who got out, that x10 is low. By a lot. There are a lot of shady people actively always trying to put workers in the category where they can use them up. Is x100 high? Maybe, but not off by an order of magnitude.
And this is just a standard, middling blue-collar kind of area. We're not talking desperate poverty or sex trafficking as part of those numbers.
Now, Covid and OnlyFans has probably shaken this up some. That combination has meant that online interaction has gone way up. That will certainly change the calculus. But probably less than you think--after a bit of grace period, OnlyFans pimps started organizing things.
Nevertheless, very few people voluntarily choose to go into the sex economy if they have other valid options. The combination of stigma that may follow you due to permanent record (cell phone cameras, porn posting sites, etc.) as well as the possibility of getting something on your legal record permanently are both strong disincentives.
I recommend going and collecting some data, Mr. Epistemologist. Meeting some working stiffs who are just trying to figure out how to navigate life will do you some good.