If you thought that those who stand to lose untold power in fiat would stand by and watch Bitcoin (and other crypto) take over the world, I believe you are mistaken.
If you think there is no way to hack the functionality of Bitcoin, you are, at a minimum, greatly misinformed.
Here is how you hack the supply/demand functionality of Bitcoin:
Econ 101: Market price is set by two forces, (1) supply, and (2) demand.
If you control either supply or demand you control price.
Fallacy: The "supply" of Bitcoin is protected and cannot be increased by forces outside of the blockchain.
Fact: Exchanges, like Coinbase, appear to be massively devaluing BTC, thus controlling supply and market price.