This is the game of the whales, but this is exactly what happened with Bitcoin, it was a joke until it wasn't. I wasn't around at that time but I'm sure the comments on its way up must've been hilarious. Ethereum is not another Bitcoin clone, I don't understand much about it but no one can't deny it is completely unpredictable in its potential and that's one of the best features an investment like this could have.

Now, for getting rich, that's another history, one would really need to put in at least 10k at around 600 and wish for it to hit 10-$20 or something like that really, I don't know how much could sustain that kind of pressure.