Why can't the advertising industry produce hundreds of billions of rich people?

The advertising industry has created hundreds of billions of rich people. The billionaire in advertising is Jiang Nanchun. Jiang Nanchun, 1973, from Shanghai and Ningbo, Zhejiang. Graduated from East China Normal University, majoring in Chinese language and literature, and founder of Focus Media. Since the establishment of the company in May 2003, he has been the chairman and CEO of the board of directors. 20 16 hurun rich list, Jiang nanchun ranked 43rd with 35 billion wealth. 20 16 hurun IT rich list, Jiang nanchun ranked tenth with 32.5 billion yuan. 20 18, 10, Jiang Nanchun ranked 58th on the Hurun Report with 39 billion wealth. In the 20 19 Forbes list of global billionaires, he was elected as the 645th with $3.4 billion. 20 191010,2019 hurun rich list was announced, and Jiang Nanchun won with a wealth of 22 billion yuan 153. On February 26th, 2020, it ranked 626th in Hurun Global Rich List of Shimao Shenzhen-Hong Kong International Center in 2020 with a wealth of 29 billion yuan. On July 23rd, 2020, Jiang Nanchun made a total cash donation of 1.07 million yuan, ranking 93rd on the 2020 Forbes China Charity List. In April, 20021,the Forbes list of the world's richest people was released, and Jiang Nanchun was ranked 432nd on the list with a wealth of 6.2 billion dollars.