All the cities of the world can't have that because quite a few of them do not have the geological conditions to be tunneled under on a large scale.
In others there are issues with digging up old stuff that's archaeologically relevant, like any time something is dug in Rome.
And any place with such a system also needs its economy/commerce to be "expensive" enough to justify such an investment. In Switzerland that works because it's pretty much one of the most expensive places on the planet.
