Bitcoin will not be stop by any government it's because of it's anonymity, bitcoin is like a good virus/malware that cannot be appreciated by government. russia , China, and any other country cannot fully erase bitcoin. If internet network exist then bitcoin will never stop existing and insisting to any protocols. Government will just waste their time trying their best to make bitcoin dissolved.
Its really possible for it to be stopped but would really require super quantum computers which we do know that it isn't available as of now and it would still take time for it to be invented which means bitcoin would able to still exist for longer years as of now.Government cant really do nothing on its existence and it cant be stopped this is why they do only impose laws on their vicinity regarding on the prohibition of using it but totally shutting it down it isn't possible.
You are wrong. In order to destroy bitcoin simply to strengthen governmental control over Fiat money. This is the weakest link in the chain of bitcoin. Now, there are no conditions to bitcoin existed independently. Every user is compelled to exchange their coins for Fiat. If banks are banned from such transactions then bitcoin will lose popularity.