Most if not all markets until now have been run by geeks with limited knowledge and skills, wading in to the criminal underworld and inevitably making rookie mistakes.
Both Ross and the guy in Bangkok had their personal emails tied to the markets. Some kids running a big market from Germany connected to the server on their mom's wifi. The list goes on.
Parallel reconstruction is the phrase you're after.
The guy in Bangkok had his personal email in reply-to headers of the the "welcome" emails being sent out. If that wasn't true, everyone who received the mail could have proven that.
Parallel reconstruction may have been a occurred, it's true we won't know.
Imagine being responsible for facilitating murder-for-hire, sex trafficking and so on...
If you want that to change you have to make it illegal to do business with such folks not hope consumers fix it for you via the magic of the market.
I think it's also more jarring that diamonds are otherwise useless symbols of status. At least iphones trickle down in some way (e.g. allowing the proliferation of older gen smartphones even in poor countries).
You need to be either professional criminal (skill set completely orthogonal to IT, so chance of somebody possessing both at professional level is miniscule), or a moron.