The missing piece is the material science advances to get the 100% fidelity mouth/etc feel. Once we have that breakthrough, all men will just buy those devices (and video games) and chill. No need for any of these questionable biological services (marriage, etc) with no guarantee and a whole lot of heartache.
Any company that solves this problem will be a $10T company.
That will also likely be the very end of our society as we know it. If you thought TFR was in the shitter today, having robot prostitutes (because let's be real, that's what you're suggesting) will not only probably grant a select few some unreal control over many, but will be the end of any society dumb enough to permit it entirely.
Any company that solves this problem will be a $10T company.