Sounds a lot like the snafu the U.S. had around testing, precautions, etc: everything was left up to the member states. I'm not sure why the vaccine rollout has been different; maybe because the purchasing and at least part of the distribution was centralized?
Because the US doesn’t actually operate like that; it was just Trump being stupid and evil. Now that we have a president who’s not a vindictive moron, we’re functioning properly.