The governments can't control Bitcoin because it is decentralized. It wasn't made in favour of a centralized system where one person or authority can have full power and control over its transaction. The farthest the governments can go is to impose regulations on Bitcoin transactions especially on the exchange sites.
Totally agree with you. Despite the regulations of the government of many countries, they cannot control the way people transact their cryptos. The decentralized nature of many cryptos make it hard for government to control them. Instead, they impose regulations to aid people in transacting their crypto assets.