[likeclockwork]

There are fewer people in Finland than there are in Dallas, Texas.

"National level" sounds like a big deal but in real terms it's the same effect as your city wide rules for larger cities.

[eru]

Well, that just goes to show that national level for bigger countries is even more overblown than for Finland.

You can generate your own examples, if that convinces you more. Eg there's no reason to forcible coordinate national minimum wages in the US, when that can be handled at city level. (Or at most at state level.)