One cannot give the money instead to Apple and then come back complain that they were mislead.
NeXTSTEP was also a true UNIX, that wasn't why most business bought it, rather Renderman and other graphical based tooling.
I have used Apple platforms on and off since the LC II days, their commercial view was always quite clear to me.
They do GNU/Linux, but BSDs should probably work on their hardware, as mentioned on this old post (sorry in German).
Or by getting in touch with companies like os-cillation.
> max 1,65cm dick