The federal reserve comes out with their own version of the bitcoin, let’s call it the “USDcoin”, they make a .001 (or some other arbitrary number) USDc the equivalent of $1 and they make it very easy to use. You can have these deposited into your existing bank account and they are immediately converted to dollars and when you send dollars out of your account they are immediately converted to USDc. Then the government also implements anti-bitcoin laws that make using bitcoin difficult or impossible to use. Of course they will claim bitcoin was being used for illegal purposes and money laundering. This will be the end of bitcoin.