I think that Kinect and Hololens, or Magic Leap, or the VisioPro and the numerous other attempts are not simply adjacent, they are parts of the same ontology.

The goal is to replace displays and interactions by something new, more immersive, spatial and relying on movements rather than mechanical buttons.

And in my opinion they all failed for the same reasons, and it is on the input side.

The idea of a metaverse as a new internet was a way to capture was was seen an an inevitable evolution, but in the grand scheme of things, this is almost anecdotal.