So if we assume that the primary rationale is indeed to gain access to non-US talent, and simply having or merging with another company is a workaround for that

So if we assume that the primary rationale is indeed to gain access to non-US talent, and simply having or merging with another company is a workaround for that, why not do this sooner by creating or merging with another company? What is unique about xAI / Twitter?