Watch out for survivorship bias. How many other things also came and went bust in the time since bitcoin started? If you invested in all of them, you probably would be at a net loss.
Unlikely, given the insane growth of Bitcoin. If you invested a million dollars equally across a thousand schemes ($1000 each), with one of those being Bitcoin at $1, and then everything but Bitcoin failed, you'd be up almost 19 million dollars.
Same principle as a lot of VC, if you invest in fifty failed startups and one Facebook, you win.
