Cricket, football and rugby are played by billions all over the world. Their ubiquity is not merely dictated by how easily even a street kid with no money can easily improvise without a marked out grid/pitch or full set of equipment, but by the very nature of the games. There are regular international competitions and enough variables and spontaneity to always provide room for individual creativity and a spectacle for even the neutral. AF seems more gridlike and inflexible, and insular. Is baseball not huge in Puerto Rico then?