In terms of interests, half of the fans are half of the gamblers. It is also an interest for all countries to host the World Cup. The commercial value of the World Cup is higher than that of other sports events. It increases the country's GDP and has the most investors.
First of all, lets talk about economic benefits. Games with high economic value can be favored by more organizers. Besides, influential football is the number one sport in the world. Countries all over the world, regardless of their economic size, have people participating in football. In sports, the popularity of Messi is higher than that of the president of Brazil.