Yes, Switzerland is in many ways liberal, but I think there are other major factors that the article misses.
For one, our infrastructure is in large parts owned by the public. Energy production is owned by cantons, public transportation and telecommunocations are owned by the confederation. Infrastructure investments are streamlined and funded in a very efficient way.
Secondly we have a consensus government. It was shortly mentioned but the article doesn‘t give it enough credit. I‘m horrified by political news from other European countries and the US, who have competitive governments. So much energy is wasted by political ping pong and permanent campaigning. In contrast: compromises formed by all major parties lead to stability and markets _thrive_ in stability. It’s boring but effective and it compounds.
Third is pure luck. We are simply in a geographic region that has always been economically active.