Ethereum Co-Founder Warns of AI Dangers Amid Big Tech Control

The cryptocurrency space is on the cusp of a significant turning point, driven by advancements in artificial intelligence (AI), according to Joseph Lubin, CEO of Consensys and co-founder of Ethereum. In a recent interview, Lubin highlighted the potential for autonomous or semi-autonomous agents to interact, coordinate, and verify transactions on decentralized networks, leveraging crypto infrastructure as the foundation for machine-driven activities. Lubin, set to speak at Consensus Miami 2026, expressed his support for the idea that blockchain technology is well-suited for machine intelligences, but emphasized that humans will not be replaced. Instead, increasingly sophisticated interfaces will simplify complexity, enabling users to interact with crypto systems through intent rather than manual inputs, with AI serving as an intermediary layer between people and protocols. However, Lubin cautioned that if AI infrastructure remains concentrated among a few large technology firms, it could pose significant risks. He stressed the importance of decentralized systems and cryptography in ensuring accountability and enabling machines to verify one another in transparent environments. The evolution of products like MetaMask, a Consensys offering, reflects this shift. Lubin described the wallet as being rebuilt as a 'new kind of neobank that you own and control,' part of a transition toward a 'personal money operating system.' AI-powered agents could act on behalf of users, managing assets, executing transactions, and navigating a growing decentralized economy. Lubin also pointed to structural changes in the Ethereum ecosystem, including the rise of 'corporate chains' as companies seek higher throughput and greater control over their infrastructure. While he expects assets to be best issued on Ethereum's base layer, he noted that stablecoins are a 'stepping stone' toward more fully decentralized financial systems. On tokenization, Lubin suggested that traditional finance and decentralized finance are converging, combining centuries of financial innovation with newer blockchain-based systems. This convergence is expected to result in a more granular and programmable global economy. Despite these shifts, Lubin adopted a measured tone on longer-term technical risks like quantum computing, stating that Ethereum developers have been preparing for years and view it as part of the natural evolution of the Ethereum ecosystem.