I think you are overestimating a bit the impact that cryptocurrencies are going to have on the distribution of wealth. I agree that it is a technology with the potential to revolutionize a lot of industries and even other aspects of our life, but its still not going to prevent the rich to stay rich and poor to remain poor. Whether you put money on ethereum or any other token with potential someone with money can just put more money in it. If you buy .02 ETH with your pub money someone else can place an order for 100s without blinking.
Regardless they could have an impact is it is easier for the average joe to invest in ETH or BTC or whatever as opposed to buying stocks or real estate but still dont think it will change much the fact that there will still be a top 1% or 10% and it will still be lopsided
RE: What is the difference between stock and cryptocurrency?