He invests in industry that does not exist in a free market.
Get lost. Buffet has no lesson to receive from you about business and free market.
« Even as a child, Buffett displayed an interest in making and saving money. He went door to door selling chewing gum, Coca-Cola, or weekly magazines. For a while, he worked in his grandfather's grocery store. While still in high school he was successful in making money by delivering newspapers, selling golfballs and stamps, and detailing cars, among other means. Filing his first income tax return in 1944, Buffett took a $35 deduction for the use of his bicycle and watch on his paper route.[17] In 1945, in his sophomore year of high school, Buffett and a friend spent $25 to purchase a used pinball machine, which they placed in the local barber shop. Within months, they owned several machines in different barber shops. »
https://en.wikipedia.org/wiki/Warren_buffet
