Ethereum Co-Founder Joseph Lubin Raises Concerns Over AI Control by Tech Giants

The next significant turning point for crypto is emerging from advancements in artificial intelligence, according to Joseph Lubin, CEO of Consensys and co-founder of Ethereum. In a conversation with CoinDesk, Lubin noted that autonomous or semi-autonomous agents can perform transactions, coordinate, and verify each other on decentralized networks, leveraging crypto infrastructure as the foundation for machine-driven activities. Lubin, who is set to speak at Consensus Miami 2026, expressed his support for the idea that blockchain technology is suited for machine intelligences but emphasized that humans will not be replaced. Instead, increasingly intelligent interfaces will simplify complexity, enabling users to interact with crypto systems through intent rather than manual inputs, with AI serving as the intermediary layer between people and protocols. However, this vision also comes with risks, as Lubin warned that if AI infrastructure remains concentrated among large tech firms, it could pose significant problems. He stressed the importance of decentralized systems and cryptography in ensuring accountability, allowing machines to 'check on one another' in transparent environments. The evolution of products like MetaMask reflects this shift, with Lubin describing it 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 and executing transactions within 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 issued on Ethereum's base layer for optimal durability, he noted that stablecoins are a 'stepping stone' toward more fully decentralized financial systems. Ultimately, Lubin envisions a convergence of traditional finance and decentralized finance, resulting in a more granular and programmable global economy. Despite the potential risks of quantum computing, Lubin adopted a measured tone, stating that Ethereum developers have been preparing for this eventuality as part of the network's natural evolution.