What about Buffy? That was a fairly recent and original franchise that was pretty successful, though no longer current. Doesn't she count as a superhero?
Absolutely. When I finally watched Buffy about a year ago, I was surprised to discover that what I had always thought was a horror-genre bender was actually a superhero story. By far the genre Buffy best fits into is the superhero one.
There's plenty of new superhero stories - they just don't do the costumes any more. Nor should they - the costumes were a necessary convention of small panel, cheap print from the early days of comics. Even venerable old superheroes are finding it hard to justify the outfits these days.