Ask HN : Whatever happened to the "curated video" scene?

I remember about two years ago, "Curated Video" contents were one of the popular ideas amongst startups. But seems like it faded away. Did it just not work because of the behemoth Youtube, Hulu etc? And people were just not that interested in "curation"? Or was it just too hard of a problem (and still unresolved?) On the other hand - curated "content" or content discovery still seems quite hot. Or does "curated content" and "content discovery" encompass "videos" to an extent that "curated videos" themselves don't work?