Nah man, "too big to fail" means a central agency is willing to bail out a failing entity. No such central agency exists for Bitcoin. It's the free market at its finest!
We should all be prepared for failure. But realistically the only thing that keeps bitcoin going is the fact that a community of people believe it has value. This same theory, reality applies to all currencies and things of value. As soon as people agree that it doesn't have value it will fail and that will be it!
I agree with you bitcoin has nothing to offer people who owns a piece of it, unlike those companies in
wall street they offer business' performance to be good for their stock prices to increase. Bitcoin's prices
is merely from the interest of people and belief that it is the currency of the future which develops it's demand.
Still no matter how big a thing is, if no one supports it it will eventually fail.