Your question seems to give credit for the paysite creating a niche. Does the paysite create the niche? From my perspective the paysite just put a public face on the niche... now, is it, or was it, a niche that was in demand enough to 1) justify the cost of the paysite 2) pay for the upkeep/new content needs to feed the site 3) continue growing after the initial burst of Lookie Loos...