https://www.nbclosangeles.com/news/local/rancho-palos-verdes-landslide-power-electricity/3500984/?os=f&ref=app
Maybe try this article, as an intro to the topic?
I was trying to look for the financial cost thus far for the restoration of utilities over the years. I recall hearing that it amounted to a significant percentage of the annual budget. This has been going on for years (decades), but has really picked up recently. But over the years, the city and utility companies have to repair the roads, power lines, water lines, gas lines, etc.
Gov Newsome declared this a disaster area, freeing up several million dollars of aid. But the above article suggests that maybe $1 billion will be necessary?! The local politician had a quote of "no expense spared"?! What if there is no practical engineering solution to all this? You can't just dig thousands of pilings 500+ feet into the ground to shore up hundreds of acres of sliding hillside. At some point, like those homes on the Big Island by Kiluaea volcano, you just say that Mother Nature (or Pele) wins, and you abandon the neighborhood.