Bitcoin is known as to be the biggest cryptocurrency. in some countries it can be used to purchase goods and services and some see cryptocurrency as a threat.
if Bitcoin comes to be number one currency in the world today, can it be hijack by the government?
The answer is simple - no, technically there is no such possibility. Neither the state nor the "superman" have anyone.
The only way is to limit as much as possible the opportunity to receive income from it or to make some kind of transactions. This can be blocking of exchanges, transfers of funds from their accounts, etc.