They want to control it. First it starts with "monitoring" and "regulation," then it moves to "auditing" and "taxation" and "identity verification" and blacklisting coins, then eventually they use "eminent domain" on the bitcoin protocol and begin issuing coins themselves to "better protect the American public."
You are correct that this is the normal state of operation of the government.
This may not actually be how it plays out this time, however.
The behaviour you're describing is how governments behave during their ascendancy phase.
As the system approaches Peak Government, however, they start employing different strategies. If you want to know that looks phase looks like, play close attention to the behaviour of the high level bureaucrats and politicians in the former USSR during the time period between the fall of the Berlin Wall and the dissolution of the USSR.
It's possible the USA is on the cusp of the "rats fleeing from a sinking ship" portion of the cycle.