That's just an argument for moving the actual production to countries where the ratio is still 30:1. Thailand, Cambodia, Vietnam, etc. Maybe even bits of Africa.
That's trading a temporary advantage for a long-term disadvantage. Eventually labor costs will even out globally, meaning moving manufacturing to countries with a 30:1 ratio isn't a long-term benefit. But "onshored" manufacturing, in the long term, would reduce dependency on potentially unreliable (or adversarial) counterparties.
> Eventually labor costs will even out globally,
Somehow I have a feeling this will never happen.
Wages are not that low in Thailand anymore. Vietnam and especially Cambodia are a lot lower than China.. for now.