>>7767987
>Noill
Because his Noill account was strictly for his porn art. I don't think he ever tried to go sfw with it, since he had a separate account for that.
>Colodraws
I know him for his his war dogs art and character, and also know him for how pissed off I get at him for never doing anything with that creation. His nsfw career seems to be a more recent thing, so it's the opposite - he was a sfw creator breaking into the nsfw space with his comic series.
>Derpixon
Have they ever done anything besides porn?
So you've listed 2 people who are strictly drawing porn, and one who's recently broken into the space and is currently making a porn series, they're not even slightly comparable to an speedorou (or doujin artists), who has a body of sfw and nsfw work that's comparable to each other in terms of complexity and quality.
So it seems to be that western nsfw artists just tend to stick to that niche if that's what works for them, rather than diversifying and also making sfw content.