Agencies & Marketing — Holding Companies Accelerate Push to Disintermediate Ad Tech as WPP Revenue Declines and Omnicom Tests AI Agents to Bypass Middlemen

Agencies & Marketing · 2026-04-29

TODAY'S SIGNAL — The holding company ecosystem is entering a decisive phase of structural renegotiation with ad tech. Omnicom is actively testing AI agents designed to cut out programmatic middlemen — the clearest signal yet that holdcos are moving from rhetoric to action on supply chain disintermediation. Simultaneously, WPP's CFO publicly challenged The Trade Desk's addressable market size,…