I don't think that the governments would ever support bitcoin, as they want to completely control the economy. At best , they can do is to float their own cryptocurrency so that they can control it in some way or other.
Of course, they never want to support bitcoin because bitcoin is a financial market, loss and gain always appear here, a concern that the scope of this market is global, if the government supports bitcoin, the currency of the country may be affected when more people invest in crypto. In addition, this system always creates an ideal place for people to avoid taxes and money laundering, the support only encourages many people to become financial criminals, and the government will not be able to solve this workload.