I'm of the opinion that it will ultimately come down to a combination of those that find this type of pron provocative and the pron girls that are willing to perform the act. If either dries up this discussion will be moot. In other words, nobody likes it nobody buys it. Pron girls don't like to perform it, it won't be performed. I realize that this may be a tad simplistic, but I think it will hold its weight.