Taking a look at the internet usage according to Internet World Stats, and comparing them to the number of $BTC wallets we see a huge gap. This puts it into perspective where this market is, why its susceptible to volatility and fraud, and how much potential it has to grow. It is still early days.
Note: BTC wallets was used as it is the largest number of wallets. There are many abandoned wallets, and overlap of people that do not have BTC but other wallets. Yet, given the small overall number, and the very large size for BTC, this is accepted as a general indicator of the number of wallets in existence.
Full tweet:
https://twitter.com/Obj_Cloud_Labs/status/971127092720078849