It seems to me like the problem is just that supply chains aren’t legible. I forget where I read this from, but Walmart or Amazon would easily pay billions of dollars to know which shipments won’t arrive over the next few months because of the rolling wave of factory shutdowns.

Once you have that legibility, the extra step of snipping the globalized supply chains seems unnecessary. Some businesses will plan to maintain continuity with all international shipping stopped, and a few will receive subsidies and mandates to do so. Others won’t, and that’s fine too; there’s a ton of value in making our lives better even in ways that can’t be sustained during a crisis. (It’s worth noting that international shipping in everything but coronavirus-fighting medical equipment hasn’t stopped during the currrent crisis.)