> You can ban the company but are you going to ban any US company from using the open model and running it on their own hardware [1]?
Just for the people who might not have been around the last time, this has precedent :) US government (and others) have been trying to outlaw (open source) cryptography, for various reasons, for decades at this point: https://en.wikipedia.org/wiki/Crypto_Wars
The vast majority of what the US government has tried to ban was export of cryptography tools. However, as your own link makes clear, they stopped doing that in 2000.
Furthermore, what was restricted was not "open source cryptography"; it was cryptography that they could not break. The only way that open source comes into it is that that is what made it abundantly clear that the cat was out of the bag and there was no going back.
The cat is out of the bag and there is no going back.
[1] https://apxml.com/posts/gpu-requirements-deepseek-r1