Now, pinterest is the best of both worlds, a place full of like minded people driven by discovery of cool things (what etsy was) and the marketplace is like central.
I suppose gender doesn't matter, but it is worth mentioning these sites have a greater population of women and most of the products I have seen are jewelry, clothing or crafts that are made by women and likely bought by their peers.
I suspect, that as it became less trendy and creative, and more of a store, most of the top people left and went to pinterest. When a community has a their top talent leave, and their competitors are more in line with their customers expectations, then thay community is through.
Pinterest isnt something I use, but I have seen some cool designs and for discovery of certain things, it seems great.
Tl; dr, as an outsider, i think thar pinterest out etsy'd etsy
People went to see fashion, crafts and home made cool things. They started their own stores and shared in that experience.
Etsy never cspitalized on this. Pinterest, is the opposite. It was meant as an awesome place to find cool stuff, then, while people are admiring it, they did a deal with stripe.
Now Patrick Collison brings them up sometimes in interviews, and both Collisons did a class with Ben Silberman in Sam Altmans stanford class.
So, point is Pinterest attracted all the people who made cool shit. Etsy attracted all the people who bought it.
Match point.