...people like fewcoins, aka falling, like to point out that every single person who could or would invest in bitcoin, is already fully invested. this is ridiculously false. like i said, 90% of the world doesn't even understand what it is yet.
But those who haven't heard of Bitcoin aren't potential investors. Grandma hasn't heard of it--but she won't invest even if she did. The "unbanked poor" of the world also aren't likely to. The wealthy elite? They all probably heard. The penny-stock crowd? All over it. Major investment houses? Of course. The point is, the demographic likely to be both willing and able to sink heavy moolah into BTC knows. The remaining 90% are irrelevant.
In the context of lets say a million active btc users that is clearly false. There is plenty of room for the userbase to move up ten times and be still globally insignificant.
A multi trillion dollar capital pool will open up with ETF's to allow tax free investing of bitcoin for the typical investor who has no easy safe route to do so at present.