Do you think we've already finished building what is equivalent of a nuclear bomb in AI? Is that enough to deter all nations? Is it enough that China or other countries will never surpass the US in AI?
No one should build these things; at best they’re an extremely costly and dirty technology that can never be used to meaningful advantage, at worst they’re an extremely costly and dirty technology that has a tendency to metastasize and eat away the host from the inside. A reasonable reading of the externalities should put a brake on both building out and on exporting the means of building out.