You can earn a lot with the bitcoin itself, I have no doubts about that if I"m honest but you will need luck on your side to succeed with it.
So its possible and there is a chance you will win a lot and this can be 50k if you have real luck or even more but you should of course not be dependable on that because most of the times that is just a dream.
It is true that luck is a needs in gambling games but without that much luck you will still can earn some of your money, you just need to have a good balance and a good setting for your max win and max loss. After you have a good setting you will sure earn but remember dont be too greedy or in the end you will lose everything