As we can see now everyone/every developed nation is moving towards digital currency. In your opinion how much time is required for digital currency to take over the current/existing market or it is impossible that digitisation will never be successful. If yes what are those factors ? In my opinion those countries which are not accepting digital currency, are doing wrong. They are only thinking about the tax. They are saying that we will not get any tax and digital currencies are fake. Fraud is very easy in digital world (that is true but it also happen in every market). Although when someone is doing business in digital currency then that person is bringing money to country that is beneficial for the country...
And you think that by most countries accepting Bitcoin that will make it take over everything and being used by everyone, well you think wrong. It can take over, but that will have to be in whatever that has to do with investments and of course we can use it as a payment method, though not all countries approves that. Bitcoin is making success, but I dont think it will replace the currency we are making use of.
A lot of us think that with more level of adoption of bitcoin, fiat will just be discarded and we think government will allow that? Moreover, government does not even have to worry for such scenario to happen as this idea of digital currency will be limited to the internet world with more of the digital age guys, the tech savvies, the internet vast category of people using it the more while there would be some category who would prefer the traditional way, so thinking cryptocurrency will take over is a big NO.