I don’t follow your logic here. Every paragraph has questionable claims, but the last one is most glaring to me.
You are hand-waving that delinking from global supply chains somehow magically fixes the issue (I don’t see how it’s relevant to the Southwest article) and that it only reduces megacorp profits.
Local doesn’t mean resilient. Local options must have their entire supply chain local in order to be maximally resilient. But now you are talking about removing a fundamental feature of capitalism: comparative advantage.
It is 100x more expensive to run a labor-based factory on the San Francisco peninsula than it is in the cheaper parts of East Asia. Cost of living, local talent, building and labor codes, etc all vary and contribute to costs. When a widget is made in SFBA for 50x the cost of the same widget with comparable quality elsewhere in the world, the risk of those one-in-a-century events means that the consumer is paying 10x more for most of their costs for the 99/100 years they don’t need the risk mitigation.
Also, your plan to delink cuts across the de facto way things work, so now you have to invent a way to convince Americans to pay 10x more for some obscure risk issue they will have forgotten about in 4 years. Are you adding massive import taxes/tariffs, outlawing imports, or do you just expect voluntary compliance?