Those numbers aren't small though on an absolute basis. Most companies are only accepting Bitcoin as a marketing ploy (e.g: look at how much KFC Canada rode that train). I don't know that the world is going to adopt a new system they hardly understand for benefits many hardly care about. More realistically, it will be a group of us who care for avoiding financial surveillance and having control of our finances that want to participate in this ecosystem.
Unless Bitcoin and other cryptocurrencies can be made simpler and better than existing solutions (which will be difficult to near impossible given capital going into these), then likely many people won't adopt it because they don't care about control of their information (they say they do, but they really don't).
Furthermore, the tech behind these cryptocurrencies are still in their infancy yet are being priced as though it has been fully developed. Even respected figures within the field agree it's a bubble because of the mass euphoria and speculation that the masses are participating in for the objective of becoming wealthy. My comments about a bubble aren't a shot at cryptocurrencies, but rather an observation of human nature which has repeated itself since the dawn of time.
RE: Why Bitcoin is Perfect for Most First-Time Investors