I actually don't think holograms are better than a 3d screen unless they are also eye shuttered or somehow focused beam on the eyes.
The problem with a hologram cube is you only have the depth available of the cube itself. This will not give the same horizon effect or sense of reality. To get sucked into 3d effect you need to have a sense of vast scale. not little tiny play toys.
Now a set of very very high definition glasses which covered each eyes full range like an egg shell over each eye with head and retina tracking is the most immersion i can think think of. It wont actually be that hard if we can get the pixel count up and means say goodbye to big screens for movies or games
Remember in the 90's when they tried to kick VR headsets off but they were a bit rubbish?
Sega did release a Hologram arcade game called Time Traveler in the early 90s. Some operators made their money back on the 1st weekend. Then they never released another one for some odd reason