On the time scale of digital "innovation", film has never really progressed quickly, and that's fine. There's no problem if a film is not "updated" for a decade or more, in fact, many people who are used to using a film might prefer that. So it might seem that new technological developments are slow, even if the pace of new developments was the same as it it always has been or faster.
I'd say we've lost more than we have gained recently, and I expect it to continue. Sure, in recent years we got a couple new color negative films, but we lost HIE, Neopan 400 120, all 220 B&W film, all Polaroid film, Kodachrome, most (all?) 800 speed color films, quickloads, pretty much all tungsten film, all 400 speed 8x10 color film, internegative film....