The spectacle of the US Congress grilling TikTok CEO Shou Zi Chew on 23 March could one day be remembered as a turning point in the history of globalisation. Over five hours of aggressive questioning, Chew – who is not Chinese, but Singaporean – did a magnificent job of defending his company’s Chinese ownership in the face of Congress’s limited understanding of the tech world. The Biden administration views TikTok as a potential national-security threat and wants its Chinese-owned parent company, ByteDance, to sell the platform to a US-owned company or face a possible ban. Chew, however, proposes that ByteDance...