3D has tried to be a thing for well over half a century, and failed every time.

from red/blue disposable glasses to modern headsets, it has always beem a niche for two fundamental reasons:

• The cost to produce content
• The inconvenience to view it

It’s trivial to throw a movie on while you’re folding laundry or cooking. Watching 3D means putting on a device that (currently) prevents you from doing anything else, the Sitting and Watching. And the content is some degree of unwatchable without that.