When a dominant incumbent directly copies a smaller challenger's key differentiating feature, the instinctive reaction is to immediately downgrade the challenger's competitive moat. This is frequently wrong. The incumbent launch is a lagging confirmation that the challenger's differentiation was real enough to threaten — not proof it has been neutralised. The correct assessment runs three checks: (1) does the challenger's specific implementation retain an advantage the copy doesn't replicate? (2) was the challenger already gaining share against this incumbent before the copy launched — meaning competitive pressure is the baseline, not a new shock? (3) is the challenger already expanding into adjacent niches the incumbent hasn't entered yet?
Do not reflexively downgrade a challenger's competitive moat when the dominant incumbent launches a feature copy. Run the three-check framework: residual advantage in specific implementation, pre-existing share-gain trajectory versus the same incumbent, and challenger's frontier expansion rate. Downgrade only if the copy fully replicates the differentiating advantage AND the challenger has stopped expanding. Applies broadly to diagnostics, SaaS, medtech, cybersecurity — any sector where incumbents copy rather than innovate.