While 3D cinema is still a thing, especially in Asia, major manufacturers such as Samsung have pulled 3D TV from its offering, signaling the demise of the once-promising format. The buzz around 3D TV hit its peak around 2010, with companies hailing its immersive powers as the future of entertainment. And the fact that all that investment turned into one massive flop has fueled arguments by VR naysayers who are keen to draw parallels between the two.
There are certainly some lessons to be learned around the fact that no matter how cool a technology might be if it doesn't hit a sweet spot between practicality, price, and compelling content, it won't snare consumers - certainly not in the numbers needed to make it "the next big thing." However, the straight-up comparison is rather unfair if we look at the broader spectrum of immersive technology (i.e. XR and Spatial Computing rather than narrower AR/VR applications) as opposed to 3D TV's very narrow utility scope.
Given the fact that a lot of the companies involved in developing these 3D display technologies are also involved in making AR/VR headsets, we are also likely to see some of the key innovations "recycled" into new products. It is difficult to envisage a future where we are still buying giant screens to put into our homes for much longer, however, when displays are already emerging that allow for high-resolution immersive content to be consumed anytime, anywhere.