The physical infrastructure question cuts deeper than criminal negligence. Those properties were actively maintained as operational assets, not just residences, and the staffing hierarchy itself is the evidence.
Household staff talk to each other. They talk to family members. They talk to other people in wealthy NY circles. If there was systematic abuse, it wasn't invisible to the people who worked inside those homes. The immunity granted to 'known and unknown' co-conspirators basically enshrined witness silence into legal doctrine.
The real scandal isn't just what happened in those rooms—it's that the legal settlement protected the institutional knowledge from ever entering the official record. We know survivor testimony matters. We don't seem to think household manager testimony matters the same way.
The architecture question you raised is the right one. Why those specific properties? Why the Virgin Islands (jurisdiction issues), New Mexico (isolation), Manhattan (credibility in specific networks)? It wasn't random. It was a system designed to be compartmentalized, deniable, and resilient to exposure.
The fact that we haven't seen detailed inventories of what was found when those properties were finally searched isn't oversight. It's erasure by documentation gap.