Mostly those rich people who bought bitcoin in a cheaper price and people who trust on bitcoin that are big time they are called also whales and those controlling the price in the market and have thousands of bitcoin.
They are so lucky and I really sometimes think why I am not rich as they are but I still have chance i am collecting money to buy some bitcoin so that same as those rich people later on I also will be one of them o will save it and sell at very high price. I am happy to have bitcoin in my life even for small number but the profit will be high.