Soccer is the most popular sport in the world  Unlike other sports, soccer does not require very much equipment  The field can be any size, goal posts can be makeshift, and anything that can be kicked can serve as the ball
Ttherefore, it is entirely unsurprising that the most recent FIFA World Cup -- the largest international soccer tournament -- attracted more than three billion viewers, which was a world record
Other sports would be similarly popular if they could reduce their economic cost.