People forget that a lot of the information pre-web was somewhat pricey, and especially anything routed through a telco. The web drove prices to zero, which has had some bad effects and many very good ones.
It listed like 2 dozen spam control schemes that had been proposed that failed, mostly for social reasons.
If I had the link, I would have simply posted it as the reply.
<https://craphound.com/spamsolutions.txt>
Your post advocates a ( ) technical ( ) legislative ( ) market-based ( ) vigilante approach to fighting spam...
Mind, I'm strongly in favour of what you're advocating, in theory. And I'm well aware that failing to accomplish this will make the Web far less useful for everyone. But the fundamental challenge remains difficult.
Hadn't twigged that Cory seems to be a principle source/reference these days. I think I first saw this on Slashdot back in the day.