http://www.businessinsider.com/history-of-porn-valley-hugh-hefner-2017-9
Porn Valley may not be the porn capital for long.
In 2012, Los Angeles County approved a ballot measure that required adult actors to wear condoms on-camera, causing a mass exodus from San Fernando Valley. The number of adult video permits filed in the county sunk 95% between 2012 and 2016, and many employees fled to Las Vegas, Nevada, where a restriction has yet to be passed.
Last year, the proposition was overturned in Los Angeles County, which porn industry leaders say will encourage the adult entertainment business to return to San Fernando Valley.
"Production out-of-state is a pain in the butt," Adam Grayson, chief financial officer at Evil Angel, a maker and distributor of adult films, told the Los Angeles Times in 2016. "You got to buy a lot of Southwest Airlines tickets. People would love to come back here."