Bitcoin is not supported in other countries because they protect their own currency. They afraid that their currency is down. The government is fear, they want to protect their own currency.
Totally not agreed with this. Bitcoin is using around the world. It would be it will break many records. But bitcoin is anonymous which will always give opportunities. So if people want to invest they can invest though bitcoin websites and also they can invest with a freedom nobody knows who are investing in bitcoin. So, even governments will not allow, people will use it for sure.