Apple's WWDC makes iOS 27 the first mobile platform where users choose Claude, ChatGPT, or Gemini at the OS level, with Siri rebuilt on a $1B-per-year Gemini license from Google. DeepSeek V4 Pro matches frontier models at 10-13x lower cost, forcing every product team to rethink API spend allocation. Colorado's AI Act enforcement begins in 22 days and the EU's August 2, both covering six high-risk domains and placing compliance burden squarely on deployers rather than foundation model providers.