Probably, the governments do not want to recognize digital currencies and wants to eliminate them, Because they cannot control them. Moreover, because of these currencies, there is a crisis if many banks and the high value of currencies adversely affect the economy of countries, especially with the rise of users cryptocurrencies.

In addition to that, I guess that in the future, the governments will recognize all cyrptocurrencies (particularly if it cannot eliminate them) to exploit financial profits but this may happen, but  certainly on conditions.