We have to look past the fact how the OLD currency system used to work. Everyone knows that paper money is not made for online transactions. So for a country to become the 'switzerland' of bitcoin does not necessarily have to depend it's ENTIRE economy on bitcoin, it can simply adopt it's traditional currency for day to day & physical use while adopting Bitcoins as the officially recognized currency for online transactions.
I see. So, Why isn't "The Internet" on the list?
Switzerland's economy is largely banking and finance-based. In order for something to become the "Switzerland of Bitcoin" it would need to base a large portion of it's economy on bitcoin services. If you mean by that, only online services, then why must there be a physical location at all?
False: The financial sector is only about 12% of GDP.
Switzerland looks as good for BTC as it does for Fiat precisely for exactly the same reasons: neutrality, stability, independence. Laws aren't set on the whims of those in Government or their sponsors (mainly since the people have full control over the laws, partly since you don't have one overall leader and/or leading political party), and due process is more or less guaranteed.