“A major catastrophe that will dwarf hurricanes Katrina and Michael will occur — perhaps tomorrow, perhaps many decades from now. “The Big One” may come from a traditional source, such as wind or earthquake, or it may be a total surprise involving, say, a cyberattack having disastrous consequences beyond anything insurers now contemplate.
When such a mega-catastrophe strikes, Berkshire will get its share of the losses and they will be big — very big. Unlike many other insurers, however, handling the loss will not come close to straining our resources, and we will be eager to add to our business the next day.” - Warren Buffett, 2019 letter to Berkshire shareholders