UNIX was already winning the server room and workstation market before Apple, that is why they came up with A/UX in first place.
The Hollywood studios that now use Apple, would be using SGI previously.
On iDevices, UNIX APIs aren't even that relevant for app development, even basic stuff like networking has been superceeded by Objective-C specific APIs.
So no, I don't see anything UNIX related where Apple has helped to caught on.
Moving beyond UNIX, now that is a thing NeXT and Apple have done a lot.