I think there is no chance that governments would ban bitcoins. Most countries including USA, gains a lot of taxes from bitcoin profits. Why would they stop such an earning? besides I think that most fund companies and investing companies invest and trade cryptocurrencies, they would not accept such a ban. All they like is fud and fomo
In my opinion, it's imposible that goverment would ban bitcoins. Bitcoin is so powerful, in these days all of us now use online transcation for conviniently purpose. Bitcoin centralized the online transaction all over the world.