If there was just one quasi-monopoly it would have probably supported the bill. As it is, the market leaders have the competition from each other to worry about. Getting rid of open models wouldn't let them raise their prices much.
So if it's not them, who is the hidden commercial interest sponsoring an attack on open source models that cost >$100mm to train? Or does Wiener just genuinely hate megabudget open source? Or is it an accidental attack, aimed at something else? At what?
Like I said, supporters included wary copyright holders and the bottom-market also-rans like Musk. If your model is barely holding up against Llama, what's the point of staying in.
The market in my argument looks like OpenAI ~ Anthropic > Google >>> Meta (~ or maybe >) Musk/Alibaba. The top 3 aren't worried about the down-market stuff. You're free to disagree of course.
It's an interesting thought that as AI advances, and becomes more capable of human destruction, programmers, bots and politicians will work together to create safety for a large quantity of humans