It's more complex than it seems. Some people call me a cuck dev who wants to let my girlfriend fucked by others in real life (people on fap-nation say that). But actually when playing NTR games, I don't consider myself as the MC.
For Emily & Alex, if you consider you are Alex, it means you play the netori route. The problem is that people are so obsessed with being the MC in the game. For me, when I play babysitter, I consider myself as Silver or the black guy (forgot the name).
I know people will say that I'm dumb because Silver (or Alex) is not the MC. But actually, they can only fuck the girls if the game players choose that route. Or I can say, there is no MC when I play games. All of the scenes are under my control.
I don't think my patrons want to let their girlfriends to be fucked by others in real life. I don't either.