Almost no company that sells commercial solutions titled "Hologram" actually are technically the classic holograms at the moment.
The classic RGB laser holograms are incredibly difficult to get right in the motion picture category and mostly what exists are static holograms. Almost all technical holograms solutions are still in early research phase and not commercial yet and very difficult still.
Almost all commercial solutions in the market that call themselves holographic solutions are some sort of 3D illusions created by some projection technology using either the traditional approaches of semi transparent mirrors/ lenticular lenses / or near eye real time 3d projections on special projection materials.
The important point being you still need some projection materials to bounce off the light unlike what you see in Iron Man Movie holograms suspended in thin air.
The massive PR and hype is how the technology marketers make you believe in the terms suitable to sell their solutions.