It actually has more to do with Nikon cooperating with software manufacturers than Adobe working with camera manufacturers. Nikon doesn't share their NEF file formats, so Adobe and others have to reverse-engineer the solution. Nikon also feels they have a competing product (Capture NX2) so why help the competition?
Adobe, Apple and Microsoft most likely buy a D7100 along with everyone else and start from scratch. That also accounts for the variance in how the NEF files are interpreted by the various software applications.
Whenever I get a new Nikon such as the D7000 or D600, I use ViewNX2 and change to a TIFF file until the NEF file format is supported. I resist JPEG until the last conversion due to the lossy compression.
"Red is gray and yellow white, but we decide which is right ....and which is an illusion"