Canon and Sony make cine cameras. Nikon makes still cameras that happen to shoot video, but not all that well - I shoot Nikon myself, but I shoot Nikon because I want the best still cameras I can get. If I cared about video at all, I'd probably have gone with Canon instead, not least because their cine and still bodies can share EF-mount lenses.

It’s not just the number of photosites, or even the bit depth - Netflix approved cameras need timecode support, among other features that distinguish a “production ready” camera from a consumer one.