In a blog post, Satya Nadella warned that enterprises using proprietary AI models are paying twice - once in money for tokens, and again in the proprietary knowledge they must reveal to make those models useful, since models learn from the 'exhaust' of prompts, tool use, and especially corrections. He argued it is inconsistent for labs to claim fair-use rights to train on the world's public data while restricting others from distilling their models in return. Nadella - whose company invests in both OpenAI and Anthropic - later doubled down on CNN, saying firms without their own models or an AI gateway layer separating prompts, memory, and harness from the model won't survive as firms, having 'outsourced your thinking.'