UBER-COMMENT: London first banned Uber under its buccaneer of a founding chief executive officer, Travis Kalanick - and now for a second time under Kalanick's successor, Dara Khosrowshahi, who was meant to be the adult in the room. Though the ban won't be a popular decision among Londoners and many will call it disproportionate, it shows Uber Technology has more fundamental problems than the temperament of its top managers.