I think the parent means : Would a Switzerland with the same ratio of different job be able to survive if the Switzerland population was let's say 2 billion people. (or are they relying on France, Germany and other neighbors to sustain their current model for instance)

Ahh, I understand now. That's a bit of a strange question though, considering that most of EU countries (300+ mil people) have similar workers benefits and culture?

It's like trying to replicate Las Vegas in twenty different locations in the US, or increasing its population to 10 million people... It doesn't scale.