The other point to note here is that there is not a way to tell what is the next facebook/dropbox either. So the amount of risk or the time that one might take

The other point to note here is that there is not a way to tell what is the next facebook/dropbox either. So the amount of risk or the time that one might take to figure whether they are going to make a huge sum in options is pretty much the same. By the time the market guesses the big company, my guess is they are already on high valuation with highly diluted equity.