Wait till the feds get their Quatum computers (yes they exist) on this. Unfortunately, they could easily destabilize the bitcoin market with enough computing power.... which they can afford.

That's assuming that the entirety of gov't WANTS it shutdown....
With potential currency crises looming "they" may want several alternatives squarely in place to keep goods and services flowing.
"They" would only want that if "they" can control it. You think they give a wet fart if people starve to death?