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Y Combinator just stepped into the Google antitrust fight – and they’re not mincing words.
In a newly filed amicus brief, the startup accelerator backs the U.S. Department of Justice and state attorneys general in calling for strong remedies against Google’s long-standing dominance in search and ad tech. YC argues that the monopolistic death-grip Google has created over the search market has stifled startup innovation and venture funding.
The brief comes from Y Combinator, once led by Sam Altman who is now CEO of OpenAI. While OpenAI partners with Microsoft to distribute AI at scale, YC is sounding the alarm on Google’s similar grip over distribution. It’s a rare moment when Silicon Valley’s elite call each other out, even indirectly.
According to the brief, startup investment in sectors near Google’s business has all but dried up due to the chilling effect known as the Google “kill zone.” YC says it’s seen this firsthand where venture capital firms steer clear of ideas that might provoke a strong Google response. The result? A stagnant, overly centralized search ecosystem , and one that hurts entrepreneurs and American tech leadership.
YC makes the case that this moment where we are on the edge of the AI revolution is an inflection point. Without extremely bold antitrust enforcement, Google will entrench its power further, extending its dominance from search into AI tools, agents and query-based interfaces. This would lock out an entire next generation of disruptors before they ever reach users.
YC’s prescription is straightforward:
- Ban exclusive distribution deals and pay-to-play payola arrangements.
- Prevent Google from self-preferencing its AI tools.
- Guard against Google retaliation or circumvention of remedies.
- Include a spinoff trigger for Android if compliance fails.
- Open Google’s search index and datasets to rivals.
YC draws parallels to past antitrust actions like the AT&T and the Microsoft case that cleared paths for the very innovations Google later capitalized on. Ironically, they note, Google owes its early success to the antitrust limits placed on Microsoft’s browser bundling.
In short, YC urges the court to act decisively. Not just to unwind harm, but to open the field again. Because without forward-looking remedies, they argue, venture capital will keep dodging the fight – and the startups that might challenge Google’s next monopoly will never get off the ground.
While YC’s brief calls out Google’s dominance, recently unsealed Google documents outlining its search ranking stack reveal how the company’s algorithmic signals – from classic PageRank to user-behavior metrics – underpin that dominance.
Source: YC Amicus Brief

As the CEO and founder of Pubcon Inc., Brett Tabke has been instrumental in shaping the landscape of online marketing and search engine optimization. His journey in the computer industry has spanned over three decades and has made him a pioneering force behind digital evolution. Full Bio
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