For those people who came into bitcoin world really early when bitcoin price was just 1USD for those it was possible to get rich with the bitcoins and many lucky ones succedded but right now i am not able to think about any way of getting rich with the bitcoins.
i think you are still lucky people who are started investing bitcoin now i think in future people will give your examples to other people and will consider you as the luckiest people who starting investing bitcoin at that time, therefore you people have still good chance to invest in bitcoin.
I believe that in the future, Bitcoin will go up, and so you can still make a fortune with Bitcoins. If you buy now, and see this as a long-term perspective.