Theres alot of people that didint they know that bitcoin is our new future. I all they know that theres many people are so rich even the poor man ever can possiblity to become a richer if he know how to work that bitcoin maybe the bitcoin will arise against to the people who needy some materials or anything that we needed... 
Many people who have a big amount of bitcoin and they sell the bitcoin in the last year is the rich person now because they can use the time in the highest price to get a big profit. But they don't want to tell who are they and they prefer to keep in secret because if they told anybody, they would be the next target for the crime. We don't know who that person is, and no one will know, as long as they don't reveal who is the rich bitcoinist.