To answer your question with a counter question...
can you imagine how much they would make on these if they made them flexible with built in vibrations....
My god they could buy a couple of 3rd world countries with the revenues of these I bet.
I've never bought a figurine to date and I've no interest in the sexualized ones, but some of the cute ones, I think, would be really cute desk ornaments. Like this one, for instance. (see attachment) It's cute! Sure, some guy (or many guys) probably do buy it for whacking-off purposes, but for me I just think it's like a Precious Moments doll only catering to my hobbies.
Actually, there's your answer!
Q. Who buys these!?
A1. Perverse men who whack off to them.
A2. Precious Moments-prone men and women.
I hate Precious Moments figurines. That's probably why I don't have any resin figures or figurines to this day. But I have considered it.
Be prepared to see a small portion of my cell phone collection. I'd post the shots of my North American phones, but they don't really fit into this thread...