{"slug":"reproducible-measure-of-platform-extraction","title":"A reproducible measure of platform extraction","kind":"Method","blurb":"Open method, open data, open to being wrong. A scoring function for value capture in two-sided markets.","published":"2026-02-20","board":"platform-capitalism-audited","cite_as":"Xooplab (2026). \"A reproducible measure of platform extraction.\" xooplab.com/publications/reproducible-measure-of-platform-extraction","read_minutes":5,"claims":[{"id":"reproducible-measure-of-platform-extraction#claim-1","text":"Extraction ratio = platform-side value capture / gross transaction value, sourced from filings + public datasets."},{"id":"reproducible-measure-of-platform-extraction#claim-2","text":"We publish the formula, inputs, and a cell-by-cell working notebook so anyone can fork and re-run."},{"id":"reproducible-measure-of-platform-extraction#claim-3","text":"Across three sample platforms the spread between highest and lowest extraction was ~6×, larger than expected."},{"id":"reproducible-measure-of-platform-extraction#claim-4","text":"Public filings undercount, so the score is a floor — not a verdict."}],"url":"https://xooplab.com/publications/reproducible-measure-of-platform-extraction"}