Thankfully I'm an expert on the subject. You see, in most of history, people didn't watched porn with a computer with internet access, and it go without having me to point out that your average wastelander don't have that, and even if he had one, he would found a better use. I think, and deeply believe that porn would be published and distributed through two medium. Seeing how the Mordino have an drug plant that can feed all NCR and beyond need in jet, and how the big casino are lit with electrical light, it is reasonable to believe that they have a print somewhere to print all sort of dirty and naughty books and mags, like in the past glory of eroticism before the advent of internet, you can also find some of the previously mentioned sexually suggestive books ingame. The second is my favorite. Theater, yeah, good old theater with projection, strip show, magic spectacle, comic show and all the entertainment for a city of excess, drug, gamble, exceptional spectacle, sex, tourism and debauchery. Unfortunately, you don't see them, so I'm pulling it out of my ass, but it would had been a nice touch. Imagine a place filled with whores screaming like a banshee, dealers, raving mad jet addict, tired bum jerking off, copulating animals, the foul odor of bodily fluids, all in a place where you can watch the last post-apocalyptic blockbuster with all your family in New Reno. Mags, and theater are the responses to all your questions, stop thinking and go mod for me a new location for the Biggest Little City of the World.