As of now, the world's fastest supercomputer is Frontier (OLCF-5) at the US National Laboratory, with a peak performance of 1.5*10^18 times per second, which means it can run 150 quadrillion times per second, and costs about $600 million.
Let's look back at the total computing power of the Bitcoin network. Based on the latest statistics, the average computing power in the past day is 445.5EH/s; that is, 445.5*10^18 hashes per second, which means that 445.5 trillion hash calculations can be performed per second;
Let's make the most extreme assumption that the time consumed by a hash calculation is the same as the time consumed by a Frontier calculation. Then the computing power of the entire Bitcoin network is equivalent to nearly 300 of the world's fastest supercomputers running at the same time.
The reality is that hash calculations are much more time-consuming, which means that the total computing power of the Bitcoin network is equivalent to adding several orders of magnitude more of the fastest supercomputers running at the same time on the basis of 300.
At the same time, as of December 2022, there are 728 supercomputers in the world; This means that in terms of computing power, no sovereign country on this planet can compete with the computing power of the entire Bitcoin network;
Miners are great. It is their hard work day and night that safeguards the foundation of Bitcoin.