DOJ Antitrust Chief Stresses Role of Competition in Digital Economy Makan Delrahim noted that some markets have few firms 'for reasons having nothing to do with a failure of competition'. analyze its content, thoughts and conclusions, and you can also rDOJ Antitrust Chief Stresses Role of Competition in Digital Economy Makan Delrahim noted that some markets have few firms 'for reasons having nothing to do with a failure of competition'. analyze its content, thoughts and conclusions, and you can also raise additional questions or predict what you think might happen in the future.aise additional questions or predict what you think might happen in the future