Genuine unknowns in ramp economics — unrecorded denominator of failed sites, structural attribution problem, 2026 AI-search discontinuity reducing predictive power of historical models

Summary

Claim: What is genuinely unknown — and why precise per-business payback cannot be forecast:

Source: Compass_artifact research document, June 2026.

Confidence: High on enumeration. The honest framing is exactly that these ARE unknown.

Caveat: When a vendor claims to have decoded any of these via a "proprietary methodology," the appropriate response is skepticism, not curiosity. See Rule: quarantine vendor ROI multiples (748% / 22:1 / similar) — never quote as typical results.