Pretty obvious no? Switzerland is a smallish country that acts as a moral-free world bank. It's easy for them to become rich in that situation.

Where I live, "moral-free" is called "immoral".

Nah I actually meant amoral (just forgot the word). Amoral means ignoring the morality. Immoral means that it is definitely bad.

In other words, not all money held in Switzerland is ill-gotten - they don't care either way.