No more ‘walled gardens’ . . . China’s Ministry of Industry and Information Technology (MIIT), the country’s top regulatory body, issued an order last week banning its largest internet companies from blocking each other’s links in their apps. Blocking external links and keeping app users within separate ‘walled gardens’ has been common practice among major apps in China to restrict the outflow of users and user data to maintain a monopolistic edge against competitors. Tencent was among the first and fastest to comply with the new regulatory requirements. Its WeChat app can now open external links in one-to-one chats, allowing...