Well Apple have opened APIs to third parties before. To say they're not doing something right now is one thing, to say that they would never and could never do

Well Apple have opened APIs to third parties before. To say they're not doing something right now is one thing, to say that they would never and could never do it for technological reasons is quite another. NAS companies like Synology and QNAP are able to offer pluggable storage options so it seems like it should be possible from tech perspective.