Why do you say as long as the government or any authority are not in charge of it as if they can be in charge of it? Bitcoin can't be controlled, no government, and no authority can be in charge of it, because it is a decentralized network, and it works on its own and isn't controlled by anyone but just powered by miners. If it were possible for a government or an authority to gain access of the network, they would have done it long ago and would have destroyed Bitcoin because they never truly liked its decentralized nature.

Governments and authorities can only impose regulations as much as they can, by tracking and taxing users through their transactions that are connected with their identity and such, but they can't control the network, freeze or stop transactions, filter transactions, etc. They don't and will never have this authority no matter what.

That's why, we should say that Bitcoin is and will always be a decentralized cryptocurrency.