Cryptocurrency is rife with problems, we know that, otherwise Bitcoin would have been adopted years ago. The good thing is, a lot of these problems can and will be addressed. When we think of problems, we think of things like hacks, security, volatility and accessibility. Regarding cryptocurrency funding on the other hand though, a founder of Ethereum, Vitalik Buterin has located a major problem in a paper, co-written by Zoë Hitzig of Harvard University.
The problem, free riders.