Now, you don't even have to leave home. What's more, you can create it yourself, if that's your pleasure, and transmit it to others. Since digital sex depends on basic stimuli that is widely known and understood, erotica is the easiest kind of material to produce. Quality isn't the primary criteria. Quality isn't even the point.
Arousal is the point, pure and simple.
Everything else is just wrapping paper. If you can pick up a Polaroid, run a Camcorder, write a reasonably intelligible sentence on a word processor or set up a bulletin board system, you can be in the erotica business. Talent has very, very little to do with it. The other irritating thing about sex is that like hunger, it is never permanently satisfied. It recurs in the human psyche with stubborn regularity.