All models are very costly regardless of open source or closed source, but I’m not sure any current model reaches that high. The 100$ million seems to only applies to the cost of computing and not of buying the actual cards.
The legislation is essentially asking that it can’t make nukes or do massive hacking attacking and only asking it of people that definitely have the money to make sure.
It’s actually very level headed compared to what most are pushing for. I can’t even see it affect current gen AI, which are mostly harmless anyways.