Why all these attacks?

Is there any government for world government? It would have been world governments. When you say world government.

You are trying to refer to a country that controlling the other countries governments in the world but we don't have such.

Why all these attacks?

The combined value of bitcoin around the world is around one trillion USD whereas the banking is $8.5+ trillion.

It's a hilarious claim to be honest! Bitcoin has a market cap of 77 billion dollar and the total crypto market cap is standing at 1.86 Trillion at this moment. As per some reports, the global economy stands at roughly 100 trillion dollars. So I am not sure how can crypto market can fuel destabilization into global economy! This is definitely based on some personal prejudice and not on hard facts!

Describing "World Government" you made me remember of One Piece, as it's the actual name of the government on that Anime/Manga series.

The Justice Department today announced the selection and appointment of Eun Young Choi to serve as the first Director of the National Cryptocurrency Enforcement Team (NCET).

Ms. Choi is a seasoned prosecutor with nearly a decade of experience within the department, and most recently served as Senior Counsel to the Deputy Attorney General. She will assume her duties full-time effective today.

“With the rapid innovation of digital assets and distributed ledger technologies, we have seen a rise in their illicit use by criminals who exploit them to fuel cyberattacks and ransomware and extortion schemes; traffic in narcotics, hacking tools and illicit contraband online; commit thefts and scams; and launder the proceeds of their crimes,” said Assistant Attorney General Kenneth A. Polite Jr. of the Justice Department’s Criminal Division. “The NCET will serve as the focal point for the department’s efforts to tackle the growth of crime involving these technologies. Eun Young is an accomplished leader on cyber and cryptocurrency issues, and I am pleased that she will continue her service as the NCET’s inaugural Director, spearheading the department’s efforts in this area.”