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Posts by Stacy Mitchell

Every consumer should read this thread. The antitrust investigation into Amazon, likely kneecapped by Team Trump, is more important than we think.

Algorithmic price coercion is destroying small (and honest) businesses and robbing us of billions.

#amazon #jeffbezos #business #prime #bezos #ftc #sec

5 hours ago 28 16 1 1

Stacy Mitchell has the best command of this subject. She explains how Amazon's ability to match any discount absolutely shreds competitors trying to give you a lower price. To hide these powers from nosy reporters, Amazon shuts off the magic algorithm during holiday shopping season and Prime Day.

9 hours ago 64 45 0 0

wild thread. There are no deals!!

12 hours ago 5 3 0 0
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How Amazon’s AI Algorithms Raise the Prices You Pay Amazon can steer market-wide prices without ever colluding—exposing a gap in antitrust law that the FTC is now fighting to close.

17. If the case succeeds, antitrust law may finally catch up to how digital markets work. If not, online price swings will continue to masquerade as competition, even as prices stop performing the work we depend on them to do. Read the full piece:

13 hours ago 38 10 2 0
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16. This is why so much may turn on the antitrust case against Amazon, scheduled to go to trial next March. 17 states have joined the case, and could carry it forward on their own if Trump bails. An early ruling from the judge is notably encouraging:

13 hours ago 41 7 1 0

15. The risk is more than higher prices. Left unchecked, algorithmic pricing will undermine market functionality. Price changes are meant to carry information—about demand, scarcity, opportunity. But today they're often just noisy artifacts of algorithms reacting to one another.

13 hours ago 36 7 1 1

14. Lawmakers have failed to grapple with the fact that a dominant platform equipped with powerful pricing technology can raise prices across a market without doing any of these things. Instead, it uses its own price changes to provoke responses that create feedback loops.

13 hours ago 36 4 1 0

13. Although lawmakers are starting to target pricing algorithms, so far they’re focused only on scenarios where firms rely on the same software, share non-public information, or coordinate indirectly. Or when they use customer data to charge people different prices.

13 hours ago 32 5 1 0

12. Amazon uses another algorithm to safeguard this revenue stream: it scans the web and punishes sellers who charge less elsewhere by stripping them of the Buy Box. Lose the Buy Box, lose your sales. The result: as Amazon’s fees rise, sellers raise prices everywhere.

13 hours ago 33 7 2 0
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11. Amazon has no incentive to stop this. It takes roughly 45% of every third-party sale in fees, so higher prices mean more revenue and profit.

13 hours ago 34 4 1 0
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10. These tools have learned to exploit Amazon’s rules, says @tedtatos.bsky.social. One tactic is a “wait my turn” strategy: Instead of undercutting the seller with the Buy Box, they hold back, allowing that seller to raise prices, knowing they will get their own turn at the higher price.

13 hours ago 30 4 1 0

9. Amazon shapes pricing decisions not only across the web, but within its own third-party marketplace. To survive in Amazon’s ecosystem, most sellers rely on third-party “repricing” software. Popular tools advertise “AI-driven pricing” to “avoid price wars.”

13 hours ago 36 2 1 0
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8. This is a novel kind of monopoly power. Economists Zach Brown and Alexander MacKay call it “algorithmic coercion.” And its impact “can be worse for consumers than if firms explicitly coordinated on high prices.” The FTC says Nessie generated $1B+ in extra profit in 3 years.

13 hours ago 67 18 3 2

7. Another algorithm, code-named Project Nessie, went further. It learned to predict when rivals were likely to follow a price hike. It raised prices in those instances — allowing Amazon to charge more, knowing that shoppers were unlikely to find a cheaper option.

13 hours ago 41 8 2 2

6. Over time, competitors’ algorithms learn and adapt. They learn that discounting doesn’t work. So instead of cutting prices, they raise them. Amazon follows. Prices go up across the web without any coordination.

13 hours ago 43 7 1 0
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5. One is an “anti-discounting” algorithm that matches competitors’ price changes instantly to the penny. When a rival offers a discount, Amazon matches it; when rivals raise prices, Amazon follows. This denies other retailers a way to win customers by lowering prices.

13 hours ago 44 6 1 0

4. This is at the center of the antitrust case brought against Amazon by the FTC and 17 states. The complaint targets three pricing algorithms that Amazon uses to thwart competitors and maintain its grip on online retail.

13 hours ago 41 6 1 0

3. Lawmakers are starting to look at algorithmic pricing, but their focus is only on collusion and surveillance pricing. They haven’t caught up to this: a dominant firm using its own algorithms to unilaterally lift prices across a market without coordinating with others.

13 hours ago 51 5 1 3
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2. We tend to see online price swings as evidence of competition. But they often reflect something else: Amazon using algorithms not just to adjust its own prices, but to track how rivals react, probe their strategies and ultimately learn how to induce them to raise their prices.

13 hours ago 42 9 1 0
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How Amazon’s AI Algorithms Raise the Prices You Pay Amazon can steer market-wide prices without ever colluding—exposing a gap in antitrust law that the FTC is now fighting to close.

1. Amazon has built powerful pricing algorithms that have learned how to steer prices upward — not just on Amazon, but across the web. I have a new piece on how these algorithms work, and how they help sustain Amazon’s monopoly.

13 hours ago 171 115 7 21
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Newly unsealed records reveal Amazon’s price-fixing tactics, California attorney general claims Exclusive: A trove of previously redacted documents was filed as part of the tech giant’s anti-trust battle with the state of California. Amazon denies it engages in price-fixing

3. Story by @georgejoseph94.bsky.social More here:

4 days ago 15 4 0 0
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2. Rather than let Amazon's bots tank their sales on Amazon, sellers raised prices on other sites.

4 days ago 21 3 1 0
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1. New evidence shows Amazon compelling specific sellers to hike their prices on other shopping sites. This is from depositions in the California antitrust case obtained by The Guardian. Expect a lot more to come out at trial. This drives prices up & is why Amazon has an iron grip.

4 days ago 56 25 1 2
Municipal Broadband Leaves Big National ISPs in the Dust, Report Finds | Welcome to Community Networks A new speed analysis published by Ookla finds that municipal broadband providers consistently leave their private Internet service provider (ISP) competition in the dust. “Small Towns, Big Speeds: How Some Municipal Broadband Providers Outperform Their ISP Peers” examined speed test data that included some of the largest municipal networks in the U.S. from December 2024 through December 2025 and compared their performance to each other and to their privately-owned ISP competitors.

City-owned broadband providers outperform their big ISP competitors on internet speeds, a new study finds.

1 week ago 21 11 0 0

At the time he invented the shopping cart, he had sold Sun and bought Humpty-Dumpty in Oklahoma City. Both Sun and Humpty were exactly the kind of small, independently owned chains that have disappeared because of lack of RPA. And he was the kind of inventive entrepreneur that we need more of.

1 week ago 0 0 0 0
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Warren Presses Amazon CEO on Shady Tactics Used to Overcharge School Districts, Local Governments, American Taxpayers | U.S. Senator Elizabeth Warren of Massachusetts The Official U.S. Senate website of Senator Elizabeth Warren of Massachusetts

4. You can find Senator Warren's full letter here: www.warren.senate.gov/newsroom/pre...

1 month ago 3 1 0 0
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3. Amazon has been telling cities and schools that they can help their local businesses by buying through its platform. But Amazon doesn't disclose the size of the fees it charges these businesses — and how big of a cut of their sales it's pocketing for itself.

1 month ago 5 1 1 0
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2. Local school and municipal officials, and taxpayers, deserve answers to all of the questions she's asking.

1 month ago 3 1 1 0
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1. It's great to see @warren.senate.gov pressing Amazon CEO Andy Jassy on the shady tactics Amazon is using to overcharge schools and cities for everyday supplies — including sham contracts with algorithmic-driven dynamic pricing.

1 month ago 14 2 1 0
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Want to help your city and local schools stop buying from Amazon? Watch our recent webinar featuring people who successfully pushed their local governments to buy from local suppliers instead — plus practical tips for how to do it in your town.
www.youtube.com/watch?v=zIS3...

1 month ago 14 5 1 1