This is sort of a bike question, and sort of a general question.
I have just bought a Fulcrum wheelset, knowing that Fulcrum is the a wheel sub-brand of Campagnolo. But Campag also makes wheels with their own name on them.
So my question is: why? What advantage is there in one company producing a trustworthy product having a sub-brand dedicated to producing the same trustworthy product?
I could understand it if we were talking about a lower brand that wanted to move in the elite level, or an elite brand that wanted to have a lower-end product. But what is the advantage of having two roughly-equal products under two separate names?