All you have to do is make porn a public utility. After all, every act you can think of (and more!) has already been filmed. The only reason to make more is so some schlep can own a new product to sell. Just buy up the rights to the existing porn, make new porn illegal, give old porn away free and, while you are at it, wait till the actors have died to show it, just to keep the whole exploitation claims at bay.
Everybody wins except the actors who will now become unemployed and those in porn acting school now who are training for a career that will no longer exist. We could spring for some retraining. Make them engineers or something.
BillM