Levin (Stanford) — making private information public unambiguously improves trade; the edge erodes as data diffuses

Claim. Counter to a naive "always hoard information" reading of Akerlof, Levin notes that improving the buyer's information — i.e., making private information public — unambiguously improves trade. The corollary: information advantages erode as data commoditises and diffuses.

Quote.

"Improving the buyer's information — i.e., making private information public — unambiguously improves trade."

Source. Jonathan Levin, "Information and the Market for Lemons" (Stanford, web.stanford.edu/~jdlevin/Papers/Lemons.pdf, accessed 2026-06-21).

Confidence. Verified. Academic, no incentive taint.

Caveats. Working/teaching paper rather than top-tier peer-reviewed publication; the underlying point is consensus information-economics, not a controversial finding.

Implication / use. Frame any documented information edge as temporary rent, not permanent moat. Cross-references the existing moat brief (Research brief: Public data as a private moat — building proprietary intelligence from government open data (piece 11 of 15)) without re-deriving it. Anchors Rule: treat any documented information edge as temporary rent, not permanent moat.