Yes I agree with you, the government of any country can try to ban or heavily regulate the use of Bitcoin within its borders. However, major countries are trying to completely eliminate the use of Bitcoin but making it extremely difficult for governments. In countries where bitcoin is currently used, it continues to be used through mechanisms such as peer-to-peer exchanges despite government restrictions. Anyone can access and use Bitcoin from anywhere in the world. This makes it challenging for any single government to stop using Bitcoin.