How Amazon’s Treatment of Third-Party Sellers Became an Antitrust Target in California and Abroad

Monica Nickelsburg, GeekWire
Monica Nickelsburg is GeekWire’s Civic Editor, covering technology-driven solutions to urban challenges and the intersection of tech and politics. Before joining GeekWire, she worked for The Week, Forbes, and NBC. Monica holds a BA in journalism and history from New York University. Follow her @mnickelsburg and read her stories on GeekWire.
How Amazon’s Treatment of Third-Party Sellers Became an Antitrust Target in California and Abroad

Antitrust scrutiny of Amazon is intensifying as new details reveal how the company treats third-party sellers in its marketplace. Regulators in California, Washington state, and Europe are reportedly homing in on Amazon amid reports that the company uses its colossal size to compete directly with other retailers on Amazon.com.

The latest inquiries build on other investigations into Amazon's business practices, signaling that the company may have grown too powerful to escape regulatory oversight.


How did Amazon get here? By doing the same thing retailers have done for decades — with a big technology boost.

Amazon has been developing its own private label products for years, most visibly under the AmazonBasics name, and marketing them alongside products from third-party sellers. It's the same tactic deployed by big box stores and the reason you'll see Kroger-branded tissue sold for $1 less than the Kleenex brand on the shelf next to it.

The difference is the powerful technology that allows Amazon to supercharge insights about shoppers and sellers. Amazon captures 38.7% of online retail sales in the U.S., according to the latest data from eMarketer, and knows how often customers search for specific items and how well products are selling. Amazon also owns an increasingly large share of distribution for third-party retailers by offering logistics and delivery services.

Those advantages are drawing scrutiny from regulators in two states. California asked Amazon about whether it uses data on third-party sellers to inform its private label strategy, according to The Wall Street Journal.

Meanwhile, Amazon's home state, Washington, is looking into whether Amazon makes it difficult for retailers to sell their products on other websites, the New York Times reports. That question is the subject of several proposed class-action lawsuits over a now-defunct Amazon policy that kept third-party sellers from offering their products at a lower price than they did on Amazon.com.

The European Union is poised to bring charges against Amazon for anti-competitive behavior because of the company's private label strategy, according to the newspaper.

Amazon declined to comment on the latest developments but has defended its marketplace practices as industry standard in the past.

The Journal previously reported on Amazon employees using third-party seller data to develop in-house products that compete with those sellers. An Amazon lawyer told Congress last year, "We don't use individual seller data directly to compete with them." However, the newspaper's investigation revealed ways that even aggregated data could provide insights into top-selling third-party products in many instances.

Amazon is also under scrutiny by U.S. federal officials.The House antitrust subcommittee has been investigating Amazon's marketplace practices for months. After reports cast doubt on an Amazon attorney's testimony from last year, the subcommittee asked Jeff Bezos to testify. Amazon initially appeared reluctant but agreed to send Bezos "at a hearing with other CEOS this summer" in a letter to lawmakers reviewed by The New York Times.

The subcommittee is asking the CEOs of Amazon, Alphabet, Apple, and Facebook to testify this summer as part of a probe into big tech. The inquiry could result in a new approach to regulating competition in the U.S. The current regulatory framework has allowed the nation's largest technology companies to accumulate incredible wealth and power. That has progressive politicians and economists rethinking how the U.S. regulates competition.

This story first appeared on GeekWire.

LA Tech Week 2026: Sunday’s Event Lineup

🔦 Spotlight

LA Tech Week 2026 closes Sunday with one final day of events across Los Angeles. We have organized the remaining lineup by neighborhood so you can finish the week with a few last conversations before everyone returns to their regularly scheduled inboxes.

ARTS DISTRICT

12:00 PM

CARSON

12:00 PM

CULVER CITY

9:00 AM

  • Women in Cleantech & Sustainability Hike and Network: See Details Here
    Women in Cleantech & Sustainability

6:00 PM

  • Founders pitch competition: See Details Here
    Biomorphix solutions, Nightingale regenerative

HOLLYWOOD

10:00 AM

4:00 PM

  • AI International: Film, Music Video & Micro-Drama: See Details Here
    AI International Film Festivals

MID CITY

1:00 PM

OTHER

12:00 PM

  • ORGANIC LIFE LABS™ PRESENTS THE ALIGNMENT LAB: The Science of human performance: See Details Here
    The Blue Room Collective

SANTA MONICA

8:00 AM

1:00 PM

6:00 PM

SOUTH LA

2:00 PM

  • Future Builders : Family STEM Day: See Details Here
    Black L.A. Tech Week (Community Collective)

VENICE

10:00 AM

12:00 PM

  • How to Raise Funds to Fund Any Business Using Digital Products.: See Details Here
    DN Events

VIRTUAL

5:00 PM

WEST HOLLYWOOD

3:00 PM

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

LA Tech Week 2026: Saturday’s Event Lineup

🔦 Spotlight

LA Tech Week 2026 heads into the weekend Saturday with more opportunities to learn, meet fellow builders and explore what is being created across the region. Browse the day’s events by neighborhood below and find the gatherings worth leaving the house for.

ARTS DISTRICT

5:30 PM

BEL AIR

5:00 PM

CULVER CITY

10:00 AM

1:00 PM

4:00 PM

DOWNTOWN

11:00 AM

2:00 PM

  • South Asians in Space, Physical AI: See Details Here
    american south asian network

5:00 PM

7:00 PM

HOLLYWOOD

8:00 PM

INGLEWOOD

10:00 PM

LONG BEACH

10:00 AM

12:00 PM

LOS FELIZ

8:30 AM

  • Griffith Observatory Hike with Longevity Cities & Don't Die LA: See Details Here
    Longevity Cities

MALIBU

5:00 PM

MARINA DEL RAY

9:30 AM

  • The Brazen Capital Walk: Connecting Women, Capital & Opportunity: See Details Here
    BrazenEra

6:00 PM

  • Build an AI workflow editor, natively in Angular: See Details Here
    Workflow Builder

SANTA MONICA

7:00 AM

  • Founders Running Club Run in Santa Monica: See Details Here
    Founders Running Club, MongoDb

9:00 AM

  • MOLTEN - Spatial hackathon (ElevenLabs, AssemblyAI, Rokoko, Datafeel...): See Details Here
    Field Lab

2:00 PM

3:30 PM

6:00 PM

7:00 PM

SOUTH LA

7:00 PM

THE VALLEY

7:30 PM

UCLA

11:00 AM

USC

9:00 AM

10:00 AM

10:30 AM

VENICE

8:00 AM

  • Open Air Health Tech: See Details Here
    Open Air Health Tech, Bowshock, Govitamins App

10:00 AM

10:30 AM

11:00 AM

12:00 PM

6:00 PM

  • Bots, Bytes & Bubbles Benefit: See Details Here
    Distinguished Minds Institute dba thinqueBytes®

VIRTUAL

9:00 AM

  • Ask a VP of Sales: Live GTM Office Hours for Early-Stage B2B Founders: See Details Here
    Kat Rucker Consulting Group

11:00 AM

WEST HOLLYWOOD

11:00 AM

  • The 10x Engineer Showed Up. The 10x Organization Didn't.: See Details Here
    Workflow Builder, Tentaro

3:00 PM

WESTSIDE

11:00 AM

2:00 PM

  • Graphic Design & Digital Printing Meetup: See Details Here
    Big Frog Custom T-Shirts & More of West LA

7:00 PM

WESTWOOD

12:00 PM

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

LA Tech Week 2026: Friday’s Event Lineup

🔦 Spotlight

The workweek may be winding down, but LA Tech Week 2026 is not finished yet. Friday’s events are organized by neighborhood below, making it easier to choose where to spend the day before the week shifts into its weekend programming.

ARTS DISTRICT

9:00 AM

7:00 PM

BEL AIR

10:30 AM

  • Bel Air Mansion Creative Brunch: Investors, & Artists: See Details Here
    Amino Capital

BEVERLY HILLS

8:00 AM

  • Founders & Builders: Morning Walk/Run + Coffee Meetup: See Details Here
    FitMatchLA
  • Music-Tech : Move with the Global Ikon & Lululemon: See Details Here
    The Global Ikon

8:00 PM

BRENTWOOD

8:30 AM

CULVER CITY

8:30 AM

  • Where, not How: a Roundtable on Scaling AI Adoption: See Details Here
    Mellonhead, Gamma

11:30 AM

4:00 PM

DOWNTOWN

12:30 PM

  • Rocket Launch: A USC Builders Night by TroyLabs: See Details Here
    TroyLabs - USC's premier startup accelerator

1:00 PM

2:00 PM

  • Inner Alignment: Experience Self-trust in Navigating Complexity: See Details Here
    Meridian Collective

2:30 PM

  • From Story to Revenue: How AI Is Reshaping Microdrama: See Details Here
    Storyverse, Soulscape

3:00 PM

  • Reinventing AI Infrastructure: See Details Here
    Karmel Capital, The University of Michigan Ross School of Business

5:00 PM

  • Built Different: Outliers, Underdogs and the Next Breakout: See Details Here
    Forty.5 Capital Ventures

5:30 PM

6:00 PM

  • The Music AI Can't Hear: What's Actually Missing from the Future of Sound: See Details Here
    Motif

6:30 PM

  • HR & PEOPLE LEADERS ROOFTOP HAPPY HOUR . Leadership Signals: See Details Here
    Speech & Mind

EL SEGUNDO

7:00 PM

HOLLYWOOD

10:00 PM

HOLLYWOOD HILLS

12:00 PM

  • Early stage co-founder matching: Virtual Speed Networking: See Details Here
    Kept

INGLEWOOD

7:00 PM

MARINA DEL RAY

3:00 PM

  • South Asians Shaping Digital Media: See Details Here
    american south asian network

7:00 PM

  • Tech Industry Speed Networking Marina Del Rey: See Details Here
    Los Angeles Fun Events
  • The New Wave: The Future of Hollywood In the Age of AI: See Details Here
    american south asian network

MID CITY

8:00 AM

OTHER

8:30 AM

  • Wedbush Ventures x Women in Product Breakfast: See Details Here
    Wedbush Ventures

10:00 AM

12:00 PM

2:30 PM

5:00 PM

  • Get Wired with Senra Systems!: See Details Here
    Senra Systems, Lowercarbon, Stifel

6:00 PM

6:30 PM

7:00 PM

PASADENA

12:00 PM

4:00 PM

  • Pasadena Ascends: VIP Closing Reception, Hosted by Wedbush: See Details Here
    Innovate Pasadena

PLAYA VISTA

10:00 AM

  • AI LAX Summit - Culture meets AI: See Details Here
    Governlayer.AI, AILAXSUMMIT.com, Google

6:00 PM

SANTA MONICA

8:15 AM

8:30 AM

  • Silicon Beach Volleyball Social: See Details Here
    Holland & Knight, JP Morgan, Mucker Capital

10:00 AM

  • Gen AI Observability for Engineering Leaders: See Details Here
    Amazon Web Services

11:00 AM

1:00 PM

  • Future of Photography : Discussing the future of image capture and IP protection. Cigar Lounge: See Details Here
    VICEVERSA EDITIONS
  • Self-Host Frontier AI: Running Open-Weight Models on AWS: See Details Here
    Amazon Web Services

3:00 PM

5:00 PM

  • Gold House x Speedrun Investors Social: See Details Here
    Gold House Ventures, a16z Speedrun

5:30 PM

  • The Autonomous Playbook: Scaling Revenue faster with AI.: See Details Here
    GrupaAI

6:00 PM

7:00 PM

8:00 PM

SUNSET

7:00 PM

UCLA

6:00 PM

  • The Builder's Lounge - Jazz Bar Demo Night with VEST x Cognition: See Details Here
    VEST at UCLA

USC

Fri, Oct 16 · 5:00pm — Sun, Oct 18 · 5:00pm

Fri, Oct 16 · 5:00pm — Sat, Oct 17 · 5:00pm

VENICE

7:30 AM

9:00 AM

  • Content in Tech: Coffee & Creators: See Details Here
    Narrative Content Studio, YT Jobs

11:00 AM

12:00 PM

  • What REALLY Happens After You Raise (But No One Talks About) - Funded Founder Lunch @: See Details Here
    Grow Through Story

2:00 PM

4:00 PM

5:00 PM

  • Sell before you build: See Details Here
    USC Entrepreneurship and Venture Management Association

6:00 PM

  • A16Z | ElevenLabs - Official Afterparty: See Details Here
    ElevenLabs, a16z Speedrun

7:00 PM

VIRTUAL

9:00 AM

  • Ask a VP of Sales: Live GTM Office Hours for Early-Stage B2B Founders: See Details Here
    Kat Rucker Consulting Group

11:00 AM

  • Vibe Marketing in the Age of AI Agents: Live Workshop: See Details Here
    Juliet AI, Inc.

1:00 PM

2:00 PM

WEST HOLLYWOOD

11:00 AM

7:00 PM

  • NO HUMAN, NO CREATIVITY? Who Creates Culture Now?: See Details Here
    xVibe AI, HFE Events

WESTWOOD

9:00 AM

  • UCLA Tech + Society Conference: See Details Here
    Easton Technology Management Center

Each session provides unique opportunities to gain insights, network, and explore various fields of tech innovation. For updates or more event information, visit the official Tech Week calendar.

Download the dot.LA App

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