China, which is the country outside the west with the highest (engineering) capability to train something more powerful than GPT-4, is very concerned about domestic stability and they also do not want an easily replicable alien tool with many unknown risks. The risk that GPT-4.5 & Plugins will cause massive rapid job displacements is reason enough for them proceed cautiously.
(The only other, more remote, possibilities outside the west are Japan, South Korea, India, and Singapore but they all share similar concerns regarding social stability and can be negotiated with.)
Companies in these countries will follow regulations, if any is enacted.