some countries actually ban bitcoins just like in china and in ruusia because they see bitcoin as a great problem that might have affect thier company because as we see bitcoin is already dominating all over the globe ...
I will correct you, Russia and China didn't ban Bitcoin. China banned ICO and closed exchangers activity. Russia is only planning to follow the same methods, but they announced the necessary moves are going to be done only the next year, so for now Russia stay free zone for Bitcoin and all altcoins.
And I doubt those countries see danger in Bitcoin and it's domination, they only try to control it to make it work on them.