https://www.theb2bstack.com/p/the-b2b-stack-8-may-chatgpt-landsThe B2B Stacken2026-05-08T15:40:32+00:00THE B2B STACK | 8 May; ChatGPT lands in UK + Omnicom guns for the middlemen + DSPs become 'Unified Ad Platforms' + Meta opens its walls