It seems to me that this is a matter of time, and after about five years, we will see that Bitcoins and other cryptocurrencies can be paid in all corners of the planet.
Now for the use of Bitcoin and other cryptocurrencies as a means of payment really just did not come the time. Here everyone is a little right. No need to run in front of the cart. On the one hand, the cryptocurrency is still imperfect and very difficult for mass use. On the other hand, there is not enough of its legalization on the part of states. Without this, the business structure does not want to accept them. They need clear rules of settlement in cryptocurrency for normal relations with the tax service and audit. How will the business structures in a few months prove to the tax authorities at what price in the cryptocurrency they sold the goods, if the price in the cryptocurrency has changed thousands of times during this time? In business, all this should be clearly stated. And the owner of the cryptocurrency still does not know what to do with it, or keep it, because over time it can grow in price, or use it as a means of payment. In due course all these problems will settle down and everything will work as a streamlined clock mechanism.
Now just until it is time for this.