For me, one of the best 2-3 devs in this genre is PhillyGames.
In Philly's debut game, Depraved Awakening, the MC has sex literally in the first scene of the game with Carli, who would then go on to become arguably the most relevant female character in the story. It wasn't a harem game.
In CoBD's first episode you can have sex with 2 main LI's, Chandra and Ellen, as well as with a secondary character named Kleo.
Both games have amazing stories, amazing writing, and are by no means a fuckfest. You have to make choices that do matter later on.
What I'm getting at is the fact that a game can allow you to have sex very early into the story without it meaning that you're destined to have a harem. IRL people can have casual sex which may then lead to a long-term relationship. Also, people make choices, but later they can change their minds and decide that someone else is better for them.
What matters is the evolution and the coherence in our MC's behaviour. I play several routes. In the route where I have sex with Angela in ep 1 I have sex with her again in ep 3. On the contrary, in the route where I don't have sex with her in ep 1 we only remain friends and I'm more focused on Jane. Also, if I cum inside Jane I'm definitely not doing it inside any other chick.
Like others said, I'm not here for the porn but for the story. However, I want some porn too. No matter how good the story is, if I play something from this site I want it to have a certain amount of lewdness.
There's another game here with a mafia setting that has built a really faithful fanbase despite having gone 2 years without a single sex scene with any LI yet, if I'm not mistaken. From my humble point of view, that's absolutely incomprehensible. I don't mean to offend anyone, but I have a feeling that people who justify such things just want to feel special, like they belong to the select group of followers who enjoy such a cult game. A game that is above the others, a game that's soooo different and worth the wait. That's nonsense for me.
Finally, one last consideration.
A guy who will be the goddamn Don of a mafia family can fuck whoever he wants, whenever he wants!
And build a harem if he so wants! The dev better watch his back if he thinks our MC will accept that meekly