Gartner warns CMOs that half of agencies' proprietary AI platforms will become obsolete by 2029. The researcher advises marketers to avoid long-term contracts with agency AI tools and push for proofs of concept. https://www.marketingdive.com/news/cmos-face-risks-locking-brands-into-agency-ai-platforms-gartner/813780/ #Marketing #Strategy #AI #Gartner