Sixty million reviews is not a vanity number — it is the point at which removal becomes a project. Enterprise teams that wired Copilot Code Review into their pull request gates in mid-2025 have now generated enough internal tooling, documentation, and process muscle memory around it that switching costs are real. The Fortune 100 adoption at 90% figure from GitHub's own statistical record confirms the pattern: this is not a product most large organizations are still evaluating. The evaluation is over. The question is now what the tool shapes next.