I think that is their only option to stop illegal activities in their country involving bitcoin, its really hard to trace people who uses bitcoin as a source of payment for drug etc, but for sure there will some a time that they will unban bitcoin because there are lots of good things bitcoin can do than evil ones.
After the Danish police arrested a few Bitcoin dealers in October, the dark markets have started to move away from BTC. Right now the preferred currency of drug trade is Monero, with Zcash and Blackbytes competing for the second spot. I still don't understand why the governments are going after Bitcoin and not after Monero.
I don't expect in other countries to use Bitcoin as a tool of illegal transactions and other deeds.