Key Takeaways: Canva, Google, and Meta all shipped AI ad generation and video features within about a year of each other: Canva Grow 2.0 (June 25, 2026), Google Ads Asset Studio's Veo and Gemini Omni updates (rolled out through early 2026, expanded May 20, 2026), and Meta's Muse Image and Muse Video going into…