That's certainly the evolution on F95, but the term
netorare itself is much more specific than that. It was originally a fantasy where a woman is
taken away from the MC by a male NPC. So, simple cheating wouldn't qualify - it had to involve some sort of jealousy and cuckoldry. Now, it's basically man exists=NTR, like you said
I intentionally left out the part about jealousy to make it more graphic, but of course you're right.
By the way: I have yet to see a well done (western - I can't seem to get into Japanese VNs) NTR game / VN.
The ones I came across were all so badly written and completely lacked any subtlety.
It's either a (usually coloured) man entering the MC's house and banging all women or the MC asking someone "Sir, could you please bang my GF / wife?". Ugh.
I think NTR should be way more nuanced than this, like:
MC meets this good looking girl. Maybe she's a bit out of his league, but she falls for him - either because he's a good guy or he did something that impressed her. Other men are hitting on her. Maybe she has a good looking boss or coworker. Sometimes she comes home late from meetings. Well written NTR games / VNs should play with your emotions and keep the cheating much more vague instead of shoving it in your face, but maybe that's just me.
Thinking of it, the NTR in
Good Girl Gone Bad was pretty well done - maybe one day someone will make a game / VN telling a similar story, but from Eric's perspective.
Anyways, I didn't want to turn this into a discussion about NTR - it's not my kink, but I also don't mind it (if it's well done).
As soon as the anti-NTR police start agitating for a game to receive that label (usually inappropriately), it tends to overwhelm discussion and drive away potential supporters. We've gotten to the point where devs have to swear off all potential NTR as soon as a game is posted... and by NTR, they usually mean even _platonic_ relationships between male NPCs and potential LIs. That absolutely _kills_ the potential for a realistic plot... let alone the potential for well-written eroticism.
*fiercely nods in agreement*
Finally, I'd like to raise the thorniest topic of all: why aren't there more female writers/devs involved in adult games?
I wished there were because (imo) female devs tend to bring something to the table that's lacking in many adult games / VNs: An emphasis on story, eroticism and well written female characters.
I'm not saying there aren't male devs out there who can do that as well, but as a general rule of thumb...
In fact a lot of my favourite adult content creators are female:
Eva Kiss,
Nottravis,
DumbKoala, Oracle and Bone.