The duplication process is built-in with SFI. As an EA you can benefit from regular PSA's and CSA's every month from your uplines co-op. Also, you can buy PSA's as part of your monthly standing order to maintain your 1500 VP.
So not knowing many people should not stop any affiliate from progressing with SFI. As long as they login every day, mainatin their points and support their PSA's they will earn commissions.