source:[1] Global Ad Spend Set to Surpass $1 Trillion for the First Time in 2026 ... (https://www.dentsu.com/news-releases/global-a ...)[2] Outlook: U.S. Ad Spending To Grow 11% As AI-Led Momentum ... (https://www.insideradio.com/free/outlook-u-s- ...)[3] Dentsu: Global Events to Send Ad Spending Past $1 Trillion for the ... (https://www.ana.net/magazines/show/id/news-20 ...)