They will use it if people will use it.
Once Bitcoin is fast (confirmation time), unlimited (number of transactions) the people will use it.
I think the government will use Bitcoin when they have full control of it, now Bitcoin is unstable in price, so it is not used at the moment
What are you talking about? Who will have control over decentralized blockchain? And you said, btc is not being used. Can you please make it clear? Dont know if you misunderstood or what. No single person or government will have full control upon crypto. And crypto is getting popularity and oneday crypto will be considered as main stream in world economy along with major fiat