How exactly do you want to regulate Bitcoin? Make rules in secrecy with a bunch of puppets and sneak in more puppets to enforce such rules and run Bitcoin?
Why are human governments so obsessed with power and control? They do not regulate the Ocean current, Sunshine and Rainfall, yet they work. If these things were regulated by us, I'd bet that our enemies's cities would be drown in Oceans, deprived of Sunshine or flooded with Rain water.
The Ocean, Sunshine and Rainfall serve the weak, strong, good, bad, small, big, free, slaves, wicked, kind hearted, murders, thieves, liars, etc So why not Bitcoin? Things were left this way for a reason.
Many government are seeing Bitcoin or cryptocurrency as a threat to their financial system
Why do they see Crypto and Bitcoin as threat? Does Cryptocurrency threaten anyone with violence or something?
If Bitcoin and Cryptocurrency are threat to the financial systems, it probably means such financial systems are inferior to Bitcoin. They need to be upgraded not to be constantly screaming that Bitcoin is a threat.
The most important thing is that most people are able to use and survive on Cryptocurrency.