How Do They Become Billionaires?

Kung Linliu, Ph. D. Story of Thinking (3) The lesson we learn from "Why do they become billionaires?(3)" is as follows.(1) The first thing to do is to found a corporation.(2) The second step is to invent the software that people will love it and need it every day. (3) The third step is to sell advertisements to the other corporations or persons to make profit from this sale.(4) The final step is that if you make profit of ten dollars from each person then you magnify by 2 billion. Finally, you make profit of 20 billion dollars from those users.