Masayoshi Son is back in Silicon Valley—and late to the AI race

MASAYOSHI SON is a man of contrasting superlatives. At the height of the dotcom bubble in early 2000 the Japanese technology mogul was briefly the world’s richest person, before losing $77bn in paper wealth, more than anyone before. In 2021 SoftBank Group, his telecoms-and-software conglomerate turned investment powerhouse, reported the biggest annual net profit in...