I think it's not that easy the government will confiscate bitcoin, because bitcoin is also very popular all over the world, and also greatly helps the needs of our society, I think the government will not be able to get rid of bitcoin.
The popularity are not an excuse for to destroy something if the government wanted this to be done they make a way to be done this for but they dont do that to destroy this currency cause as what we may ever have to use it for government see this things too.