I think you are certainly right, but why focus on Asia exclusively as a second fab location? One earthquake could flood all of them. As I said, oil giants in the middle east trying to diversify seems pretty ideal. I only suggested EU for the knowledge workers and it faces a different ocean.
From a geopolitical standpoint, US investment in Vietnam’s manufacturing capability would put pressure on China. China is trying to move up the value chain with Vietnam already eating their lunch on the low end.