> Even a boom in electric vehicles has not been sufficient to counteract this, since manufacturers have done their best to reduce use of the formerly super-expensive metal.
Biological resources like that are exceptionally vulnerable because harvesting them reduces the rate of creation of replacement whales, in a vicious cycle.
But they have enormous stockpiles, compared to the biological resources. The upper 1 kilometer of the Earth's continental crust contains about 10^19 tonnes of cobalt. There is no similar stockpile of whales.
It was a time when there wasn't enough whales to light everyone. We killed (almost) all the whales before coming up with something else (oil)