Ethereum Co-Founder Joseph Lubin Highlights the Risks of AI Control by Major Tech Companies

The cryptocurrency landscape is on the cusp of a significant transformation driven by artificial intelligence (AI), according to Joseph Lubin, the co-founder of Ethereum and CEO of Consensys. In a recent conversation with CoinDesk, Lubin emphasized that autonomous and semi-autonomous agents will be able to transact, 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 he does not envision humans being replaced. Instead, he predicts that increasingly sophisticated interfaces will simplify complexity, allowing users to interact with crypto systems through intent rather than manual inputs, with AI serving as the intermediary layer between people and protocols. However, Lubin warned that if AI infrastructure remains concentrated among a few large technology companies, it could pose significant risks. He stressed that decentralized systems and cryptography will be crucial in ensuring accountability and enabling machines to 'check on one another' in transparent, verifiable environments. As part of this broader shift, products like MetaMask, a Consensys product, are evolving to reflect the changing landscape. Lubin described MetaMask 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. 'You can walk around with your personal financial system in your pocket,' he noted. Lubin also pointed to structural changes within the Ethereum ecosystem, including the rise of corporate chains, which he expects to become more common as companies seek higher throughput and greater control over their infrastructure. While he anticipates that assets are best issued on Ethereum's base layer, he acknowledged that they can be used across other networks. Stablecoins, a rapidly growing sector in crypto, are part of this transition but not the ultimate goal. Lubin views them as a 'stepping stone' toward more fully decentralized financial systems, noting that current models rely heavily on centralized issuers. Over time, he expects growth in decentralized collateral to enable more robust, crypto-native forms of money. Regarding tokenization, Lubin suggested that traditional finance and decentralized finance are converging, combining centuries of financial innovation with newer blockchain-based systems. This convergence will result in a more granular and programmable global economy. Despite the accelerating shifts in the crypto landscape, Lubin adopted a measured tone when discussing longer-term technical risks like quantum computing. While not an immediate concern, he stated that Ethereum developers have been preparing for years, seeing it as part of the natural evolution of Ethereum.