How the world's top ad agencies aligned to fix prices in India

Top ad agency executives in India, including from WPP, Omnicom, and Dentsu, secretly coordinated pricing via WhatsApp and meetings, forming a suspected cartel to prevent undercutting. Omnicom’s India CEO flagged a violation when a rival poached a client. India’s antitrust body is investigating; Dentsu turned whistleblower. Firms face potential heavy fines for breaching competition laws.