[krapp]

Society doesn't want to consider certain transactions to be legitimate.

Allowing a marketplace for murder or human trafficking (or the other nefarious things organized crime gets up to) allows the most efficient and effective bad actors to prosper, as markets are designed to do. But society doesn't want bad actors to prosper, it wants them prevented from acting badly.

[jack9]

I agree. This is why the "counter-argument" doesn't make sense. It assumes that it's not preventative (so it's a negative effect?). Might as well let them carry on?