Not running a bitcoin cafe out of customer funds...
According to Coinbase, the total value of all Bitcoin is currently about $3.5 billion. This is a tiny, tiny market for "Fortune 500s and Wall Street" and is equivalent to the value of a single (smaller) mid-cap company. Even at its peak, the total value of all Bitcoin was only around $14 billion.
Daily Bitcoin transaction volume hasn't exceeded $100 million since July and has been as low as $33 million recently[1]. For comparison, daily volume in the FX markets exceeds $5 trillion.
Blockchain technology might be important but Bitcoin itself is about as interesting as the Burmese kyat or Gambian dalasi.
[1] https://blockchain.info/charts/estimated-transaction-volume-...
EDIT: those currencies you mention are under prolonged inflation and are tied to the economic output of some small countries... bitcoin isn't either of those
The problem with Bitcoin is liquidity and market depth. Even if you're a small-time trader, there are better trading markets to focus your time and energy on.
Regarding the random currencies I mentioned in jest: I was making the point that any obscure currency or security is just about as interesting as Bitcoin.
No, it doesn't. Major financial institutions invest significantly in technology and many are already actively exploring the blockchain[1].
I wouldn't go so far as to say that the Winklevii can't stake out a position in the broader blockchain market, but a Bitcoin exchange isn't likely to help them establish a meaningful position.
[1] http://www.bloomberg.com/news/features/2015-09-01/blythe-mas...
> Major financial institutions invest significantly in technology...
That they may be, but that's no guarantee of success or domination. That's the whole point of the risk of startup. Also the reason for the explosion of interest. I'm not suggesting that Gemini will win, but they are in the space, at the beginning, unencumbered by old tech (as the larger institutions are) and are making overtures to the established order. We don't know where that will lead.
That's not to say that some of the technology they develop can't be repurposed for resale to other institutions, but a lot of others are already playing in the blockchain technology space and they don't have the burdens of trying to create and manage exchanges, ETFs, etc. for an "asset class" that is miniscule and heading in the wrong direction.