The Japanese investor's foray into generative AI brings back memories of WeWork, says Shuli Ren of Bloomberg Opinion. HONG KONG: When Masayoshi Son bets big, it either marks the dawn of an era, or the dusk of a tech cycle.  The chairman of SoftBank has enjoyed some spectacular wins. Spotting Alibaba early handed SoftBank $58 billion when the Chinese e-commerce firm went public a decade ago. A US$32 billion take-private deal of ARM Holdings in 2016, followed by a timely listing of the chip