It seems to be a common viewpoint that it's "obviously" naive to think that the same political institutions could work for everyone around the world.

But lots of day-to-day-life things (city structures, school systems, increasingly even food...) seem to globalize quickly just fine.

Why the difference?

Complexity vs Complicated

The more local, the less complexity. The more likely similar complicated solutions can work. 

The less local, the greater complexity. The less likely similar complicated solutions can work. https://i.imgur.com/bKZZqhl.jpg