He's not arguing for OpenAI, but for the rest of us. AI is a public technology, but we're on the verge of losing our ability to participate due to things like this and the megacorps' attempts at regulatory capture. Which they might just get. Their campaign against AI is a lot like governments' attempts to destroy encryption. Support open source development, It's our only chance. Their AI will never work for us. John Carmack put it best.

Fuck "Open"AI, fuck Microsoft. Pragmatism or slavery.