We had a fireside in which a guy--whose name I've forgotten, sorry--who was a state legislator in California, and before that a movie company lawyer, talked about the agenda-making he witnessed in the 60s and 70s in the movie studios. He said that they really did have an agenda to make porn more acceptable because they recognized it was a money-maker (and, I believe he said liquor makers were in on it too, because they do well in similar sex-industry businesses). The reasoning was that if they could sell sex openly (eventually) in the home, then they'd make more money.
I think we've been seeing the fruits of that all our lives, the loosening of media standards. Remember all that about the V-chip? If everyone has a V-chip and TV shows are rated, then there's no need for TV stations to worry about their content, because you can just avoid the shows you wouldn't want to see, that kind of reasoning. Do any of us use a V-chip? I know I don't.
Now, there's no real reason for you to believe what I say--it's secondhand knowledge at this point and I can't remember the guy's name--but I believe it's entirely possible, and I definitely wouldn't put it past Hollywood.