The Bitcoin code is open source. Anyone from anywhere can download the code and run a local copy. Your coins are securely stored across computers all over the world. Your balance cannot be frozen by any authority. Maybe central exchanges that convert fiat to Bitcoin could be regulated, but mining cannot be stopped, transactions cannot be stopped. Unless governments all over the world shut down electricity and internet.
At that point question mark is on the government that does this rather than Bitcoin.
Fail to see how is Bitcoin fragile. It has been running non stop for past 8 years churning out a block every 10 minutes without fail while being under constant attack from hackers, governments, it has its own internal governance issues, hard forks, technical issues, scaling debates. And yet it is growing in liquidity and scale.
I doubt state actors can do anything about it.