if with just 10BTC can make you become a millionaire , what about people who own 1000BTC? i think they'll be a quillionaire 
Yeah that is really true than everyone who have 10 bitcoin in the future will just be a millionaire and just retire.
Why work if you have that money. I think in year 2030 bitcoin will just be around 5K - 10K dollars.
So it is hard to say how much money you are going to make bu I am sure that you are not going to be able to become millionaire.