The AI industry is structurally reordering. Talent is bleeding from the biggest labs, governments are drawing borders around model access, and a new thesis is emerging: don't bet on one model — bet on many.

Evidence For

• Google DeepMind lost two of its brightest stars in a single week. Noam Shazeer — co-author of the 2017 "Attention Is All You Need" paper that birthed the Transformer architecture powering every major chatbot today — left for OpenAI. Two days later,...