As for now, in many places, BTC would be seen as going into the grey zone, which the govs wouldn't like, and would probably see it as a casus belli to look into your finances more thoroughly.
And they are not willing to do it because for them, it's going to invade what the attributes the government has like in its traditional assets and investments. While citizens are open and welcoming to it but not them. We would and have been flexible into its adoption, whether we receive pay or we pay using Bitcoins. We're very flexible and we're into both of it.
They would want to have their shares in it, if even allow it at all - and if they would go for the path where our BTCs turn back to fiat while we use it, it would be not worth it at all.