This has been explained time and time again so here we go again.
Rape was removed because there was no reward or consequence for it. You could break Ava and Dakota to the point where they no longer spoke with you but the MINUTE you gave either a Serum, they forgot completely. They were back to being normal sluts for the MC doing whatever he wanted of them.
Rape went against the entire identity of the game with Serums. You would literally have to ignore the entire point and title of The Company to rape Ava and Dakota all the while not even witness the storyline that Westane wrote for both when you DID use a Serums.
Basically, it was made redundant and removed 2 years ago.
Westane has said that forced scenes will return in some way but they will not be like before. It'll just be a system we have to wait for in the next 2 years