> But banning cryptocurrency would be much easier since the majority of the population doesn't own any and it can be framed in very positive terms.
How exactly do you ban or confiscate bitcoin? New bitcoin wallets are created without even touching the internet! It can be done from the middle of the Mojave desert without any proof of it ever happening or existing. Internet access is needed when sending bitcoin but not when receiving bitcoin. By the time someone sends it, it’s too late, you can’t confiscate it because they don’t have it anymore. If the government bans or too heavily monitors the bitcoin network for activity, people can still send slips of paper through the mail with the private and public key to one of their wallets and trade around pieces of paper instead.
Combine that with a brain wallet and you can literally store bitcoin in your brain and pass through borders carrying nothing on hand. Try doing any of that with gold, Euros, Dollars, or Chinese Yuan.
The only thing stopping bitcoin is exponentially higher transaction costs but paradoxically higher transaction costs make small bitcoin holders effectively illiquid. This reduction in supply further drives up the price infinitely until most bitcoin is rendered illiquid or until people think slow cryptocurrencies with high transaction fees are stupid.