My take-away from that is that obviously localized small to medium scale corruption and buddy-buddy networks where things are done face to face, verbally, in ca

My take-away from that is that obviously localized small to medium scale corruption and buddy-buddy networks where things are done face to face, verbally, in cash, and without any advanced database/record-keeping are obviously much harder to discover and disrupt than something that's run as a centrally coordinated business effort. As just about anyone who has done business in an entirely cash-based economy where things are done verbally and on handshakes with little or no electronic or paper based record keeping will know all too well.