Monetize Marketplaces with Measurement
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Andrew Yates, CEO of Promoted.ai, on when marketplaces should layer on ads
marketplaces often get in trouble is when they skip straight to "therefore you owe us more money" without being able to back it up.
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The real issue is not charging more, it is charging ahead of proof. In a marketplace, higher take rates or new ad spend only hold if sellers can trace the extra cost to extra sales, better placement, or better tools. Without that link, the platform stops feeling like a growth partner and starts feeling like a tax collector, which is when seller trust and retention usually break down.
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The practical test is measurement. Promoted frames the job as running A/B tests on search and discovery changes, then showing whether purchases, bookings, or other marketplace outcomes actually rise. That gives the platform evidence for why it deserves a higher cut.
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This is why ads usually come later. The interview argues a marketplace should first see whether it can simply raise take rate. If sellers would leave, then ads become a way to charge a higher effective take rate only on sellers who want more distribution.
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At scale, ads can become meaningful, but only on top of strong transaction economics and credible ROI. Uber said its advertising revenue run rate passed $650M in Q2 2023 and later exceeded $1B in Q2 2024, while Instacart disclosed a large and growing advertising and other revenue line tied to brand demand and measurement.
Going forward, more marketplaces will treat monetization like yield management, not a blanket fee hike. The winners will be the ones that can show each seller what incremental demand they created, then price against that value with take rate, sponsored placement, or tools, without making the marketplace feel pay to play.