Latency and logistics in my experience will always get you. On the similarly populated, but much closer to major landmasses than Vanuatu island I live on, we ha

Latency and logistics in my experience will always get you. On the similarly populated, but much closer to major landmasses than Vanuatu island I live on, we have had local outages from multiple failures close together. One transformer blows, and there is a replacement in stock for that. But if another one goes, then the new one has to be shipped from abroad, and that will take a few days even when emergency listed. Keeping replacement stock gets expensive as well, has to be checked, maintained, etc. It all adds up.