Research

Microsoft's AI Moat: How Enterprise Lock-In Translates to an 89.9 Positioning Score

Research Team · June 8, 2026

Azure OpenAI Service, Copilot for Microsoft 365, and GitHub Copilot form an interlocking AI revenue stack with switching costs that rival any moat in enterprise software history.

Microsoft's AIPI of 89.9 is the second-highest score in the S&P 500. The gap between 89.9 and NVIDIA's 91.5 reflects a structural difference in the AI business, not a judgment about competitive quality.

NVIDIA sells the substrate. Microsoft sells what runs on top of it — and what runs on top of it is increasingly locked to Microsoft's own platform.