- Prison sentences for people getting caught owning BTC, trading it or selling goods in BTC.
Ask yourself why no country is doing it. The answer is, because it can never work in a Western country, where people have some basic freedoms. How would any court justify imprisoning people for owning a digital form of money? Nobody would feel safe if they started busting people's doors and going through their computers because they bought cryptocurrency.
The best way of fighting it is doing what they're doing, trying to make a centralized version of digital currency that they control and that is linked to the current financial system to satisfy people who want fast digital money that can be sent 24/7 with minimum fees. CBDC will cover that for you, be accepted even in places that don't accept bitcoin and allow the government to track your purchases, charge you as you go and such.
It's already being done. The goal is to create a society where you get a ticket and the money is taken from your account. They don't ask you to pay the bill, they just take the money. You get into argument with your wife and leave home, she calls the police, says you hit her, they access your wallet and see that you bought a beer in a bar, they go there and arrest you.
Another situation. The government decides to additionally tax all owners of cars that are over 25 years, or over 2 litre, or whatever. They instantly know you own one and deduct the tax from your wallet.
The best way to fight something is to make people disregard it by showing vulnerabilities in the system and making something that is similar and doesn't have those exact vulnerabilities. It may have different ones, but they'll emphasize the ones they want to "fix"
Example? Bitcoin is vulnerable because of its exchanges. Our digital currency will be exchangeable at any bank, so you'll be able to create a digital currency account and transfer any amount of fiat currency into it through the bank's API, with no fees! We won't tell you that this digital currency is centralized and we have full control over its creation and destruction. We'll concentrate on making you fear crypto exchanges and feel secure exchanging at our bank.