In 10 years for internet means the 1970s. At that time, vast majority of people had no idea such thing existed, and only a few of early researchers used it. For common people, adding value started around the early 90s, when the first commercial ISPs appeared. So, that's about 30 years of initial ramp-up. Let's see where the bitcoin will be in another 20 years. Noting that we already have commercial companies dealing with it - so if anything, the adoption is moving much faster.