The accidental ad tech founder: Eric Hochberger's 20-Year bet on the open web

My newsletter: https://simonowens.substack.com/   In 2004, Eric Hochberger co-founded Mediavine, which would eventually become one of the most influential ad management companies on the open web. The company didn't start as an ad tech firm — it began as a scrappy collection of SEO-fueled fan sites, built by three founders chasing traffic in the early blogosphere. While selling $50 sidebar ads and offering SEO consulting services, Eric and his partners learned firsthand how fragile and inconsistent early digital advertising could be. That experience ultimately pushed Mediavine to build its own header bidding system in 2014, a move that quadrupled the company's ad revenue and transformed it from a publisher into an ad management platform. Today, Mediavine represents roughly 17,000 publishers and operates with a 140-person team, primarily serving independent creators rather than legacy media brands. In a recent interview, Eric pulled back the curtain on how programmatic advertising actually works, why "made-for-advertising" sites are siphoning off industry dollars, and how Google's AI Overviews are reshaping traffic patterns — sometimes wiping out entire businesses overnight.