You are wrong in so many ways.
First off, bitcoin will drop. Probably down to between 3500 - 4000$. If you get in at 3500 - 4000$ you still have a chance to make a lot of money. I am planning to invest about 12000$ once it goes down. History shows that everytime bitcoin hits a new high it has always fallen between 30 - 40%. If we are lucky and bitcoin falls 40% the price will be 3600$. If i get in at 3600$ with an investement of 12000$. I will then own 3.3 Bitcoins. And most likely within 2018 bitcoin will hit 20.000$. I will then have 66666$, and that is if i dont even buy and sell actively on highs and lows, if i manage to make my 3.3 btc to say 6 btc in 1 year by selling on all time highs and buying at big dips which if history repeats itself will be entire possible.
My 12.000$ investement will then be worth about 120.000$.
It is of course possible that bitcoin does not reach these highs but it is very likely that it will.
All i want to point out is that it is not to late at all to earn a lot on bitcoin. If you at the same time make some investements in coins that seem to have a bright future such as eth, ltc, xrp (mayby), neo and many others i will have the potential to make a lot more money.
In other words, if you dont think further then 1 month from now, no you cant get rich on bitcoin. But if you think over 1 year, 2 years or 5 years ahead of time, when bitcoin may actually make it to everything from 0 - 100.000$ hell no its not to late to get it.