Of course, there will be more international and local legal regulations of cryptocurrencies in the future. Every existing asset should be regulated. A lot of countries already implement blockchain in their in their transaction systems and other countries accept cryptocurrencies as a payment mean and even create their own national cryptos. No governmental institution will allow crypto transactions and exchange to fiat money by the banks without the strict existing regulation.
But the process of implementation will take time. Because it is hard to achieve the common approach to defining its legal status and creating a unified international legal regulation of this asset. Negotiations on the international level take a lot of time and require a lot of meetings. This process can take up to several years.