In the next 5 years, the crypto currency will only develop, because it is a new, convenient way of payment, which many more people have not understood. Over time, it will become even more popular, and its growth will increase at times.
In my opinion, cryptocurrencies in the next five years will be known for more people will encourage or promote it. This can be done if more people will be interested about it and is willing to learn understand and even invest to it. The business in cryptocurrencies always depend on the people who believe and uses it for good. Thats why we need to be aggressive on promoting cryptocurrencies.