I think china and switzerland is the best choice for bitcoin business...
Because china has already legalize a crypto currencies and also the peoples are using it like fiat..
I think so. since most of bitcoin users are Chinese and their government does not ban bitcoin. I think if you open a business about bitcoin there. then will be many people who become your customers dude. I think the key to making a business about bitcoin is there is a legal protection, freedom to use bitcoin and many users there