Silicon Valley helped make California the economic powerhouse it once was—but now, one of its most prominent architects is sounding the alarm and heading for the exits.

Sergey Brin, the billionaire co-founder of Google, is blasting California’s proposed wealth tax in stark terms, warning it echoes the very system his family fled decades ago. For Brin, this isn’t just about policy—it’s personal.

“I fled socialism with my family in 1979,” Brin said, referring to his childhood escape from the Soviet Union. “I know the devastating, oppressive society it created… I don’t want California to end up in the same place.”

That’s not subtle criticism—it’s a direct comparison between modern California policymaking and the failed economic model of the former USSR.

The proposal at the center of the controversy? A one-time 5% tax on individuals with a net worth exceeding $1 billion. On paper, supporters claim it’s a way to fund public services. In reality, critics argue, it’s yet another signal that success is being punished—and that the state’s leadership is willing to gamble with its economic engine.

The tax wouldn’t just target cash on hand. It could apply to a sweeping range of assets, including businesses, investments, intellectual property, and even collectibles. While primary residences and certain retirement accounts would be exempt, the broader reach has raised serious concerns among entrepreneurs and investors alike.

Brin isn’t waiting around to see how it plays out.

According to reports, he has already relocated to Nevada, settling on the state line near Lake Tahoe—a move that allows him to remain connected to Silicon Valley while sidestepping California’s increasingly aggressive tax policies. He reportedly still travels regularly to the company’s California headquarters, but his financial base has shifted.

And he’s not alone.

A steady stream of high-net-worth individuals and businesses have been leaving California in recent years, citing rising taxes, regulatory burdens, and a growing sense that the state is hostile to innovation and wealth creation. Brin’s departure is simply the latest—and perhaps most high-profile—example of that trend.

Behind the scenes, the tech titan is also putting his resources to work. He has reportedly backed efforts to defeat the proposed tax, helping fund advocacy groups aimed at stopping the measure before it reaches voters. In just a few months, tens of millions of dollars have been funneled into the fight.

Critics of the proposal warn that if it passes, the consequences could be severe. When the very individuals responsible for building companies, creating jobs, and driving innovation start leaving, the tax base doesn’t grow—it shrinks.

Supporters, meanwhile, continue to argue that billionaires should “pay their fair share.” But that argument is losing traction among those who point out a basic economic reality: when you make a place less attractive to invest, people eventually stop investing there.

Online reaction to Brin’s comments has been swift and pointed, with many placing blame squarely on Gavin Newsom and the state’s Democratic leadership. For critics, the wealth tax is just the latest example of policies that sound good politically but risk long-term damage.

As California barrels toward a potential vote on the measure, the question isn’t just whether it will pass—it’s how many more innovators will follow Brin out the door if it does.