Quote - "Unrealistically proportioned figures appears to be what people want."  

Yes, but is it because that is the look they prefer or is it because there is no real alternative out there ?

I think it's because it's the look people prefer.

Look at the characters and morphs sold for Vicky.  Rather than being more realistic, they push her even further in the Barbie direction.  Bigger boobs, smaller waist, bigger eyes, bigger lips, longer legs, etc. than the DAZ default.