I went to a whole art exhibition of holograms as a kid that blew me away, and I've always wondered why holograms are so rare ever since. I had one for a while, the famous one of the microsope with the lens that you can actually look through to see a computer chip inside. There's nothing else like it.
I suspect, for your typical art nerd, holography is prohibitively expensive and limiting in expressiveness. And for your typical tech nerd, it's also prohibitively expensive and limiting in expressiveness.
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Maybe if you could figure out a digital work flow with digital development method it could really take off. But holograms are analog and hard to deal with.