if anyone has missed the point it's you.
this started with the question if you use the expansion effects would it load in basic Omnisphere or be unusable? a preset was then, <Johnny rotten voice "a rude word"> shared </rotten rude word> to test this. the answer? it loads minus the effect in question.
for some reason despite the file in question being <50kb, you asked if a sample was being shared (which it wasn't).
then you started to move the goalposts with a "what if expansion presets are being shared?", which they weren't.
in any case, the omn files are presets - they don't contain the samples, which go into a different folder and have to be packaged up for distribution. plus, even if someone went to all that bother, it wouldn't load as expected because the effect won't be licensed (and who knows, maybe the samples are encoded so they only unlock with a licence).