Digital currency is to change the world, many of which were positive, to a certain extent, they pose a containment of the government, gave the people an alternative, but that doesn't mean they don't need to be regulated.
Maybe but who would be at a real disadvantage if it was not regulated. The government or you?
One of the core reason is: anonymous, do not track, not regulated digital currency will make form a closed loop technology crime, money laundering and terrorist, and disappear from unsolved bits, bytes, while the impact damage with each person in this world.
That's what the government says, but without Bitcoin there will still be the same level of money laundering, terrorism and other crimes that will use the US dollar as the medium of exchange.
If every penny of extortion is tracked, is there enough motivation and courage to launch a WannaCry to attack the world?
Cyberattacks have always been around, if your system is compromised, then criminals would have other uses for it other than ransomware.
Lucky for us, ransomware also subsidizes Bitcoin. Hahaha.