Today many countries accept bitcoin as a virtual currency, is it because bitcoin is so high that they think bitcoin can change the country's economy, or because the country has many bitcoin users already?
I believe that bitcoin can improve the country's economy because bitcoin can be used as a tool to make transactions more efficient if it is only legalized as a form of currency. More efficient because I am pertaining to international business transactions where we can tie up with them with low fees so we can save lot of money through using bitcoin. It also gives additional profit to its user because as the bitcoin value rises, more profit is expected. Even we can't feel its impact right now in our economy, I believe that bitcoin has a great potential in the future. Right now, its impact can only be satisfied by those residence who are using and investing in bitcoin. The more residence using it, the more impact it can contribute in our economy. Remember that the smallest unit of a society is family. Imagine, If more family have good source of income and gained more profit, country's income will follow then, its economy will surely change.
Bitcoin isn't taxable. It can provide comfort and income to users and holders but to make a significant effect on the economy, i think there will be major changes to its current state. Once governments accept btc's they will find a way to make money out of it and first thing in mind would to tax btc transactions. That way it will become more of a factor in a counties economics
This is the first thing which comes to your mind
But that doesn't mean that governments are going to do the same since before going for something you should think whether it is possible to achieve at all. People love to theorize but rarely can explain how their ideas can be implemented in real life. So, how is a government going to tax Bitcoin transactions? Have you thought of that? They might go after miners (which are there to confirm transactions), but that would only lead to people starting to use other coins. The fees are already insane and taxing miners would likely mean quick but painful Bitcoin's demise