They must have set things up so that people in power would volunteer themselves freely into Yamatetsu clinics-hence the vigor of Crashcart's marketing thrust. And then they just sat back and waited for the movers and shakers to get fragged up so that as many powerful people as possible could be loaded with twisted circuitry. (Or maybe they didn't wait. I was suddenly wondering exactly how Corbeau's car happened to veer off the road. A sniper's rifle bullet into a tire, perhaps?)