This is really a big problem and it takes time to change. If all payment methods are bitcoin, I think in places where the internet is inaccessible, we need to have traditional money. So, in order to be ready for this innovation, the government must facilitate and develop the country so that bitcoin payment methods are used everywhere. And this takes a lot of time to change it.
without the Internet and connection to private technological networks, it is impossible to conduct any transactions on any plastic cards in Fiat, so that cryptocurrencies too will not be able to live without the Internet.