It makes sense that all the major criminal organizations would use Separatist surplus, no?
>already a criminal organization, no need to worry about imperial law banning it
>industrial bases were in the mid and outer rim, not concentrated in the heavily policed core like republic and imperial equipment
>battle droids could buff out security, likely not used for long range enforcement due to legal issues and the droids' lack of creativity
>could scale all the way up to smaller frigates for forced debt collection on entire communities