I think the right way to think about Berkshire Hathaway these days is that it's a highly decentralized, minimum viable civilization. They do everything from freight locomotives, to furniture-making, shoes, petroleum, chocolates and more. Then there's a layer of financialization on top of it all (insurance, re-insurance, loan issuance, market-making etc.).

If the U.S. became a failed state tomorrow, there's a genuine chance that Berkshire businesses would keep on operating and trading with each other, on Berkshire rails. It's like a hive of cockroaches -- businesses which are individually strong, that when woven together are un-killable.