One of the most magical parts of the hologram for me is that if you cut it (the film media) in half, you have two copies of the hologram. The reduction in size is a loss of resolution - but the scene stays the same.

Though that also is part of the reason that a they're not more common. Each hologram is the film rather than a "print".

If someone wants to make 100 holograms to be able to sell them as more than a one off art piece you're making 100 units of the film.