Jack Ma, founder of Alibaba Group Holding, responded to the resignation letter of a long-term employee on Tuesday, a rare move for the tech veteran who stepped back from all corporate roles in 2019. In a response published on Alibaba’s internal website, Ma addressed the concerns raised by a 15-year employee, who criticised the “big company disease” afflicting the Chinese e-commerce giant in an extensive internal letter. The employee, a product development leader on the team responsible for...