“Remember all the stories of the elites building fortified compounds in places like New Zealand.”
It’s important to remember that elites are tethered to servants. They can’t live without them. So any compound could be compromised by the desire for service.
In-house servants are pretty common. Sure, extreme measures would be required for incoming goods and services, but just the remoteness of the compound locations would provide some protection.
The old adage, “If you want something done right, do it yourself.”