But weirdly, at the same time, Bitcoin is also the biggest deterrent for governments to abolish physical cash. If people are forced to choose between a paperless currency controlled by the government and a paperless currency which no one can control, I'd imagine a fair few would opt for the latter. Governments don't want that. So it provides them a reason to keep cash around for a bit longer.
This theory has little to do with reality.
Think of it this way. People currently have the option to pay with cash. That is comfortable for most people.
What is convenient for people is to pay with their mobile phone or watch. Cash is dirty and uncomfortable: you pay with a banknote and you get heavy notes and coins back. With a mobile phone, while you send a WhatsApp or look at Instagram, you pay and you don't notice.
Money is going to become a tool for surveillance and control (more so than it already is, I mean). I feel like that would create a lot of resentment from a large proportion of the public. People will realise the importance of privacy when they're faced with the threat of losing it forever (because that's what CBDCs represent). And once they become aware that there is an alternative, I fully expect there to be a surge in popularity for Bitcoin.
I respect your opinion, but I think you are confusing wishful thinking with reality.