But do most of the countries regulate these ata national level or a regional level. I suspect it would be the former. So it might not be 100% accurate but that doesn't mean it's inacurate overall.
See, that's the thing. I think it's mixed. Focusing on the national level is too narrow a view. You have to be able to see both the national and federal level in order to formulate a more complete picture. There are just too many variables otherwise.