Since the number of live music venues by percentage of population has decreased everywhere in the last 70 years, and since PROs license not only live music, but also DJs, Juke boxes, etc., and since DJ clubs have increased while live music has decreased, and since it is well known that bars and nightclubs are among the business ventures that generally have the shortest overall life span, I'm not sure of the relevance of your question or what you are trying to prove by your premise. I only know of one nightclub here in town that has live music 7 nights a week. We used to have several. The rest have cut back considerably, and the cut backs have nothing to due with licensing since all of the better venues here have PRO licenses.