Cryptocurrency is not failed to solve the problem, give it time and give a good result. That is not a one night working to solve the problem, but it will need a long time to solve every problem in our life especially in the financing problem. I am sure that cryptocurrency can handle the problem, but we still need an approvement from the government so cryptocurrency can start to work.
The solution crypto was created to solve is still on, it now depends on how each an everyone of us decide to see or use it. Some uses it for payment, while some see it for investment alone