But really, other than this fatal flaw, it's a great narrative of the internet spilling into and interfacing with analog markets
Technology is not a magic bullet. It also is also neutral and does not choose sides. Crime will exist for as long as it is profitable. There's even crime and black markets in highly secure, structured environments like prison. "Arms Race" between law and outlaw will continue.
Note that I said "could" in the original post ...
Type 1. Some things "could" be with enough power backing them,
Type 2. While others could never be regardless of power backing (eg engineering limits like quantum computing, or even organizational limits like the petro-bolivar?).
With the right backing - political, resources, talent - surveillance tech "could" quickly squash dropgangs, so it belongs to Type 1. (Btw, where talent goes is a key determinant.)
Even when the dead drop could be as subtle as attaching something under a public bench or dropping something in a trash can?