In the race to become the richest in the world in the future, only businessman can not get that place. In addition to being a big business owner, one must hold bitcoins. Do you agree with the statement?
Well no, I don't agree, and what you raise in the OP shows that you haven't stopped to do some simple maths. The first one you list, Michael Saylor, has a net worth of 1.6 billion dollars. For him to reach Elon Musk in net worth, the price of bitcoin would have to be multiplied by 142, meaning that each bitcoin would have to be worth 6 million dollars. I don't think I need to explain much more. It should also be borne in mind that the price increase in the coming years will be less accelerated than in the first years of bitcoin's life.
This is precisely why there are people like Warren Buffet and others who don't understand bitcoin and think it is a kind of ponzi, because they don't need it at all to be on the list of the richest people in the world.