That's a rather strong assumption about other state actors, in terms of their current progress, future progress and their ability to attract researchers who get frustrated by the pause.

After the 6-month pause is over, then what? Another 6 months? What is to be hoped to be achieved in those initial 6 months other than non-participating entities getting a leg up? If there is no guarantee that the 6-month pause will not become one year or a few years, then maybe some researchers will move to non-participating organizations/states in anticipation of an extended pause.