Captain Price
Member
One explanation is that where ballroom orchestras play up to ten different rhythms (including the five Latin rhythms, and sometimes the odd salsa/mambo), salsa events feature mostly salsa and the odd cha-cha-cha (but the majority of salsa dancers do not dance it properly). The low cost of entry into salsa relative to ballroom/Latin ultimately leads to monotony, so there the salsa scene is bigger, but the turnover is much greater.