Bitcoin opens many doors of new markets, which would affect the economy of a country, the reason why there are some countries who don't like bitcoin because cryptocurrency controlled by no one and because they don't get taxes. But if governments open there eyes and use bitcoin in its positive ways as possible you would be shocked that the third world countries who opens their gates on bitcoin will become one of the best countries we have ever seen.
It is true that the bitcoin is now playing a vital role in our economy. There are now many businesses and stores in my country that are now accepting bitcoin as payment. Bitcoin helps the transaction to become faster and better.
Well, since the price of bitcoin is not stability, accepting bitcoin as payment is very risky, It can see as a long-term investment for the seller than a payment method. The fee for transferring bitcoin is a problem too, bitcoin is a crypto-world symbol, but for payment, there're many altcoins can do better work than bitcoin, like DGB, LTC,...