Can I ask how you came to that answer?
https://www.crypto51.app/ says a one-hour 51% attack on Bitcoin would cost only $237K as I type this, which doesn't seem like much for tech behemoths (much less nation-states).
You are not comparing the same things.
Specifically: Bitcoin is done on specialized ASICs, while the tech companies have general purpose CPUs.
Can I ask how you came to that answer?
https://www.crypto51.app/ says a one-hour 51% attack on Bitcoin would cost only $237K as I type this, which doesn't seem like much for tech behemoths (much less nation-states).