Eric Ries: The Entrepreneur Who Rewrote How Companies Are Built

In 2004, a 25-year-old software engineer and his co-founder made what most Silicon Valley investors would have called an embarrassing decision. Instead of hiding in stealth, they released IMVU within six months, before it was ready. The product was buggy and the co-founders were mortified, but customers showed up.

That decision, born out of necessity and a refusal to repeat past failures, became the seed of one of the most influential business frameworks of the last 25 years.

Eric Ries is the author of The Lean Startup and the founder of the Long-Term Stock Exchange (LTSE), the 14th national securities exchange in the United States. His work has helped a generation of founders build more disciplined companies. His newer mission is redesigning the incentives of public markets to make long-term thinking the norm, not the exception.

Key Takeaways

• Eric Ries created the Lean Startup methodology while serving as CTO of IMVU, a social network he co-founded in 2004 with Will Harvey.
• His 2011 book The Lean Startup has been translated into nearly 30 languages and is reportedly required reading at Y Combinator.
• He founded the Long-Term Stock Exchange, which the SEC approved as a national exchange in 2019 and which launched trading in September 2020.
• In September 2025, LTSE petitioned the SEC to allow companies to report earnings semi-annually instead of quarterly, the first formal proposal of its kind since current requirements were set.
• Ries has co-founded two additional ventures in recent years: Answer.AI with fast.ai's Jeremy Howard, and Virgil.

Who Is Eric Ries?

Eric Ries grew up in a family of doctors who viewed his obsession with computers as a curiosity at best. When his father brought home a beige IBM XT with a five-and-a-quarter-inch floppy drive, Ries was immediately transfixed. "From the moment he brought it home, I just thought it was total magic," he told the Ignite Podcast in October 2025.

He wrote programming books in high school and earned a B.S. in computer science from Yale. He co-founded Catalyst Recruiting while still a student; it folded before he graduated.

At Yale, Ries had an internship at There.com, a virtual reality company in Silicon Valley. That experience hooked him on something more than code. "You could think thoughts and make them tangible in the real world," he later reflected.

After graduation, he moved to Silicon Valley to join There, Inc. as a software engineer. The company launched its 3D virtual world product in 2003. It soon failed.

Three failed startups before IMVU, including Catalyst Recruiting and two more Silicon Valley ventures built after graduating. Ries co-founded IMVU in 2004 with Will Harvey, one of the founders of There.com. His track record at that point was zero for three.

"Once you go public, you're for sale whether you want to be or not."

Eric Ries, Ignite Startups Podcast, October 2025

What He Built: From IMVU to a Global Movement

IMVU was a 3D avatar social network where users could buy virtual fashion for their digital characters. The team built it to layer on top of existing instant messaging networks, so users would not have to abandon their contacts to join a new platform.

The breakthrough came from a class that IMVU investor Steve Blank required the founding team to audit at UC Berkeley. There, Ries encountered a principle that would reshape everything: you can learn from customers before you build the product. "Instead of spending years and years building something in stealth mode, you could actually put something in front of customers right away, even if it was terrible," Ries recalled.

At IMVU, this meant releasing an MVP within six months and deploying code to production nearly 50 times a day. When a feature the team had spent six months building launched to zero traction, the lesson landed hard. "We cannot afford to make this mistake again," Ries said.

The approach crystallized: validate with real users before building.

By 2010, IMVU hit a $40 million annual revenue run rate and made the Inc. 500 in 2011. Ries had stepped down as CTO in 2008, but not before the methodology that saved IMVU had given him something larger to share.

In 2008, he began writing about the approach on a blog, coining the term "lean startup." Tim O'Reilly invited him to speak at Web 2.0 Expo; Harvard Business School offered him an entrepreneur-in-residence position. The ideas spread faster than Ries expected.

"I never in a million years imagined that it would spread around the world the way it has."

Eric Ries, Ignite Startups Podcast, October 2025

The Lean Startup, published in 2011, introduced the minimum viable product (MVP), validated learning, and the build-measure-learn loop. The book has been translated into nearly 30 languages and is reportedly required reading at Y Combinator. Steve Blank wrote in Harvard Business Review in 2013 that it might make the traditional business plan obsolete.

The follow-up, The Startup Way (2017), applied lean principles inside large organizations, including GE's FastWorks program. Ries also released The Leader's Guide (2015) through a Kickstarter that raised $588,903.

The Impact: Why Lean Startup Changed Everything

The influence of Lean Startup extends well beyond Silicon Valley. Governments, nonprofits, universities, and Fortune 500 corporations have all adopted some version of the methodology. MVPs, pivots, and validated learning entered the mainstream business vocabulary.

But Ries noticed something troubling as he advised more companies. Startups adopted lean techniques and still imploded, often after going public. The problem was not their product development process; it was their incentives.

"Even beloved brands lost their sense of purpose after going public," Ries observed at the Ignite Podcast. He watched Virgin America, a company with genuine customer loyalty, get sold against its founders' wishes because public markets demanded it.

The short-termism disease, as he called it, was a structural problem. No amount of better product methodology could fix it without changing the incentives governing public companies.

"Mission is not a luxury. Mission is the foundation. If you want to build a company that lasts, if you want to build a company that matters, you have to put mission at the center from day one."

Eric Ries, Ignite Startups Podcast, October 2025

His diagnosis pointed him toward a structural solution. If the incentives were broken at the exchange level, fix the exchange.

What's Next for Eric Ries

The Long-Term Stock Exchange is Ries's most ambitious project. Founded in 2012 and backed by Andreessen Horowitz, Founders Fund, and Greylock Partners, along with Reid Hoffman and Marc Andreessen, LTSE spent years navigating a grueling SEC approval process. The agency approved it as a national securities exchange on May 10, 2019, making it the 14th such exchange in the United States.

LTSE launched trading in September 2020, processing 283,765 shares with a notional value of $117.7 million on its first day. Twilio, Asana, and ThredUp became early dual-listed companies. In 2022, LTSE raised $100 million from James Walton, grandson of Walmart founder Sam Walton.

Unlike Nasdaq or NYSE, LTSE requires listed companies to publish binding long-term policies covering governance, employee treatment, and executive compensation. The goal is to attract long-term investors, such as pension funds and endowments, whose time horizons align with building durable businesses.

In September 2025, LTSE announced it would petition the SEC to allow public companies to report earnings semi-annually instead of quarterly. Ries described it as "a longtime dream" of the business community and the culmination of decades of effort by policymakers and long-term investors. The proposal would be the first formal change to reporting frequency since quarterly requirements were established in 1970.

"The time has come to create a capital markets system that rewards patient capital and long-term thinking."

Eric Ries, Traders Magazine, September 2025

Alongside LTSE, Ries co-founded Answer.AI with Jeremy Howard, the creator of fast.ai, focused on applied AI research with real-world applications. He also co-founded Virgil in 2024, a venture whose details remain private. He hosts The Eric Ries Show, extending the conversations he has been having publicly since 2008.

His message in 2025 echoes what he wrote on his early blog: validate before you build, stay close to customers, and design your structure to survive the pressures ahead.

When asked what legacy he hopes to leave, Ries keeps it short: "I hope people say, he helped us build companies that matter. That's it."