Strip clubs are in a secular decline anyway so there are many confounding factors to take into consideration.

It's mainly that societal standards have risen . So men too want to feel unique and special and don't see the appeal of going to a place and pay for a woman they don't even know to grind on their crotch seconds after having done the same with an other patron, and seconds before doing the same moves with yet an other patron.

As societal standards rise men essentially become almost female themselves in their thinking and psychology around encounters with the opposite sex. I include myself in this characterization, it's kinda of an uncharted territory and kinda sad, but that's the way it is.

Going to the strip club is very easy, but it's not fullfilling unfortunately, it used to be, but not anymore, wish there was a way to go back