The problem seems to be that the majority of humans are fundamentally afraid of learning about and setting up such systems themselves
You're right about individuals in general who want to set up secure communications, but I think you're overlooking the contexts in which they want to do so.
Most people rationally choose to buy phones rather than building their own too. I can set that sort of stuff up, and I have, but you know what? It's a pain in the ass keeping up with technological obsolescence year after year, and it's not all that easy to just pick up this stuff from scratch. Like people in any other line of work, sex workers would rather focus on being good at their core business of providing fantasy entertainment than invest too much time in developing secondary technical skills. This is especially important given that most of them are self-employed.
The other issue to bear in mind here is that they have to connect with customers somehow, and advertising is a real problem. They still need some way to reach potential clients and an easy way for clients to connect with and pay for whatever services it is they desire.
Like people in any other line of work, sex workers would rather focus on being good at their core business of providing fantasy entertainment than invest too much time in developing secondary technical skills.
By that same argument sex workers should also not be too concerned about learning how to drive, cook, or whatever else they need to do in their lives... the extremes of desire to specialise is what leads to centralisation.
When I was still in school, we learned about how to write (physical) letters and use addresses, phone numbers, and other such things that would be considered general knowledge today. Perhaps that should now include IPs and hostnames.
It's a pain in the ass keeping up with technological obsolescence year after year, and it's not all that easy to just pick up this stuff from scratch.
This "technological obolescence" is partly because currently the power to force such change is held by a tiny fraction of the population, and everyone else is clueless so can't do anything but follow along. If the balance of power changes, that will as well.
You're right about individuals in general who want to set up secure communications, but I think you're overlooking the contexts in which they want to do so.
Most people rationally choose to buy phones rather than building their own too. I can set that sort of stuff up, and I have, but you know what? It's a pain in the ass keeping up with technological obsolescence year after year, and it's not all that easy to just pick up this stuff from scratch. Like people in any other line of work, sex workers would rather focus on being good at their core business of providing fantasy entertainment than invest too much time in developing secondary technical skills. This is especially important given that most of them are self-employed.
The other issue to bear in mind here is that they have to connect with customers somehow, and advertising is a real problem. They still need some way to reach potential clients and an easy way for clients to connect with and pay for whatever services it is they desire.