For a sign of how the fierce demand for memory chips triggered by the boom in artificial intelligence (AI) is benefiting technology-driven economies, look no further than South Korea. Last month, exports from Asia’s fourth-largest economy grew at a blistering rate of 53 per cent in annualised terms, the fastest pace since 1984. Shipments of semiconductors, which are used to store and funnel the huge amounts of data for AI services, increased nearly 170 per cent to a record monthly high of...