Ethereum co-founder Vitalik Buterin has publicly criticized AI nationalism following Senator Bernie Sanders' proposal to grant the U.S. government a 50% stake in major AI companies including OpenAI and Anthropic.

Sanders' push represents a nationalist approach to AI development, arguing that critical AI infrastructure should remain under public control rather than private corporate hands. The Vermont senator frames government ownership as a safeguard against concentration of power in tech firms while ensuring AI benefits serve the public interest.

Buterin pushes back on this framing. He contends that AI nationalism creates fragmentation in global AI development and mirrors problematic patterns seen in other tech sectors. His critique suggests that government-mandated equity stakes may stifle innovation and create inefficiencies rather than protect citizens. The Ethereum founder advocates for more open, decentralized approaches to AI governance rather than state-owned monopolies.

This exchange highlights a growing tension in tech policy. On one side, politicians worry about corporate control of transformative technologies and push for public ownership or regulation. On the other, technologists fear that government involvement fragments development and slows progress. Sanders' proposal reflects broader concerns about AI concentration, particularly after OpenAI's boardroom drama and its shift toward increasingly closed development practices.

Buterin's position aligns with crypto's broader ethos of decentralization and skepticism toward centralized authority, whether corporate or governmental. However, his criticism arrives amid intense scrutiny of AI's geopolitical implications and calls for stronger guardrails on development.

The debate underscores a fundamental question: who should control transformative technologies. Sanders argues public stake ensures democratic accountability. Buterin counters that nationalism fragments global cooperation. Neither position addresses what decentralized AI governance might actually look like or whether such structures could scale to challenge entrenched players like OpenAI and Anthropic.