I very much doubt this. I don't give a shit about porn being real, I want something hot to jerk off to. I know it's not real, realistic, true, whatever, but still manage to get off.
I bet "real" porn will stay a seperate genre, like amateur today, but once you can insert the face (and approximate body) of whatever celebrity/crush/what have you there is inside a sex scene that doesn't give of the uncanny-valley vibe, the sex industry will change a whole lot. Especially if it can be scaled up quickly, then shoting porn will be very hard to get a return on with all the competition that will undeoubtedly be out there.