To be honest, I believe that the above curve is not aggressive enough. It is my firm belief that cryptocurrency will replace the current physical currencies. If that is going to be the case, cryptocurrency is only on the very beginning of its journey. It's still in the early adopter state based on the market cap of cryptocurrency versus the market cap of currencies in general. If I'm correct, you will see a sharp increase in the rate of adoption starting in the 2021 time frame as we move out of the early adopter phase.
RE: The Future of Bitcoin