 After developing radio and television stations, in 1948, he built the studio Gon-Cam, which was considered the best television system in the world in the time, according to survey conducted by the Columbia College of Chicago.With the passage of the century, the television broadcasting market became dominated by two powerful companies, Televisa—the largest Spanish media company in the Spanish-speaking world — and Azteca, even though several dozen regional networks operate in the country.In addition, many states have their own television networks, and public television has increased its market penetration in recent years.