Titans of digital technology are building similarly intricate webs of co-operation and the main rationale of limited co-operation is to spread costs, the ai deals have more to do with antitrust authorities’ conviction that big tech is already too big. Last year American Airlines and JetBlue, another carrier, ended their alliance on America’s east coast after being sued by the Department of Justice. Disney’s new sports venture is getting a close look from antitrust referees. Quasi-mergers are not new. Firms have long teamed up to manage project costs, new technologies and manufacturing-obsessed governments. Is this the newest way of dominating the industry ?

