That's not limited to just L&P. It's an epidemic with slow burn games, devs get stuck in a self defeating cycle in which they can't advance the game. The buildup is simultaneously too slow and too sudden. The erotic tension is so rooted in the tease that even well meaning devs can become overwhelmed and never pull the trigger. Instead, we get a nasty cycle in which painfully slow steps are adhered to out of a misplaced sense that corruption is a linear thing that follows a set schedule. But it gets to the point where it's so slow and
something has to happen to jolt the story forward. Once a game reaches that point, I find that most begin to circle the drain. It will be one step forward- one step back in an update, then two steps forward- two steps back in the next update; and so on, because advancing the story in a meaningful way it a huge step but at the same time you need new content. The naive FMC will begin to take bigger swings in her corruption, but then will ultimately end the update asking herself "What have I done? Why did I do that? Why did I enjoy it? That's so wrong!" And there will always be some flimsy excuse that mitigates the actions of the updates; she was drunk or she was blackmailed, or the mood was "too" romantic, or it was her boss and she couldn't say no, or she felt guilty, blah blah blah.
At this point slow burn games aren't even worth getting invested in because they all follow the same pattern. Almost none have successfully transitioned from the sexually repressed first act, to the sexually open third act. Somewhere in Act 2 they all get bogged down. Even good devs, who have good intentions and aren't intentionally trying to milk the audience, get stuck. They get to Act 2, they've shown that the FMC wants sex, but she still can't openly give a blowjob...and you have to give a blowjob before you have sex because it's written in the rules! And once she gives a blowjob, she then has to do it one or two more times before she can swallow or deep throat, and you can't have sex until you deepthroat! And then, you can't have sex until you let a cock rub against you...but then you have to find a reason that she's in her underwear in front of the guy that SHE STILL INSISTS SHE CAN'T HAVE SEX with....
BLAH
BLAH
BLAH
At some point devs just need to let their characters have sex. Sometimes I wonder how sexually experienced these devs are because they treat sex like it's really complicated. You can still have a great story about corruption AND let your FMC have sex early in the game. I swear to you that it's possible.