Outside Montréal, only Québec City has a significant sex industry, more mp oriented, other than SC. SC are more mainstream, socially accepted and, most important, were never considered illegal. Sex work, otherwise, has always been a large city phenomenom. The few exceptions were the small towns along the railway lines and ports where voyageurs and train operators would stop for the night. Trois-Rivières had a thriving sex scene mainly because of it's port before the 1970s. It's not the case anymore. I don't follow the reviews anymore but their used to be some for Saguenay.