I think it will always be a niece market to some extent. It's never going to become a mainstream payment method for Joe Public.
Why do you think this?
However, there's still massive opportunity for increased adoption. Right now Bitcoin really is a geeky thing. Nobody outside techie circles has heard of it.
That's certainly a hurdle, but I don't think it's insurmountable.
It's slowly starting to permeate the mainstream financial news and as press coverage increases, we can expect much more growth as investors with a penchant for high risk / high gain investments put their money into it.
Agreed. But what indicators point to the this being a finite point before mass adoption? What prevents BitCoin from becoming a "real" (so to speak) currency? As more investors show exposure to BitCoin, why would it not eventually reach a critical mass of sorts and cascade into mainstream adoption?