cryptocurrency is still in its legal stage of adoption. But nevertheless, it can only get better from here and the world will still make it a globally accepted system which can make way for other opportunities in the global market. Take for instance how the ban placed on countries from using paypal has been ridiculed by the entrance of cryptocurrencies. Now you can exchange anything on the internet and receive your value in a cyber asset which has no restriction and control of a central body, this is really beautiful. Give it a little more years, you will see its positive impact on the global market.
I see the most fundamental cryptocurrency problem nowadays is a legal problem. Because the law gives certainty. Even in some countries crytocurrency is prohibited, this means that for users of cryptocurrency transactions are illegal, and something illegal means breaking the law. This is a problem that can hinder the development of cryptocurrency in the future, because to become a digital currency used globally, legal issues must be clear.