Those countries are just scared on what will be the possible result if they are going to let bitcoin as a method of payment to them. Because it is uncontrollable and they don't have powers to make movement on it's value. If they will going to let it enter their economy, it's either their economy will be manipulated by a single whale.
Bitcoin is getting out from anonymity very fast and couple countries already have some laws about bitcoin. Bitcoin is traceable and we can`t hide so much, government can find a way to control us, for more anonymity there is some other coins, and that is what I read around the forum, which coin provide most anonymity monero, or zcash.
Bitcoin is not supported by those who do not accept technology and future, that will change with time, new generations are coming that knows much more then old conservative people.
Bitcoin is bitcoin and this is already backed up by too many investors and users, although if XMR and Zcash are being considered as that anonymous. Then people will still remain to bitcoin as it is the one that has enough investors, we know that many people are loving the way it is being used for investment and currency and for other countries, they really don't like that because of those said factors.