Because all transactions, additions and rule changes are done by consensus of the miners.
And the miners are mostly automated servers that say yes to all transactions, yes to all additions followed by the guidelines set up at creation and no to any large rule changes. of which the changes are already quite limited by the already existing blockchain.
So much so that when a large theft has taken place, either a fork is created or nothing is done about the theft at all.
And thefts have been made.
This is why so many alt-coins keep popping up, as Bitcoin is easily surpassable in terms of function/technology and it’s also why “Satoshi Nakamoto” decided to quit the Bitcoin project and went on to create another.
Tether on the other hand is a promise that you will get US dollars for the Tether you buy. Their transactions are not done by miners, but by Tether Incorperated. Control Tether Incorperated and you control all Tether transactions.
Link?
I just web-searched around and found that the CIA is working on anti-ransomware projects.
Other than that, one site was speculating about Bitcoin being a CIA project, since it uses a cryptography method designed by the NSA and then we delve back into the cryptography issue again.
There has been cryptography algorithms that had deliberate weaknesses so the CIA could look into them, but those have been exposed and it’s generally not a good idea anymore since they get found out rather quickly these days.
Other than that, I did some digging into the Satoshi Nakamoto character and it’s pretty clear that there’s only person that could have made it and he’s clearly not a CIA asset from what I’ve found out about him. He clearly had a good reason to keep his identity as hidden as possible and I just hope he is still doing okay with the current political landscape that we have right now.