I think I know the boring answer to that question, but there are reasons manufacturers should consider it.
This just means that for every sixteen units of width, there are nine units of height.
No wider, and no narrower.
Lucas Gouveia / How-To Geek
Why Do We Want Ultrawide TVs?
Turning your “big screen” 16:9 TV into something much smaller.
Why Arent They Being Made?
Hannah Stryker / How-To Geek
However, how can you have demand when most people didn’t know it was an option?
Current TV aspect ratio and resolution standards are agreed upon by governing bodies.
With monitors, the set of standards are different, and really only overlap with some 16:9 monitors.
Hannah Stryker / How-To Geek
First, you might upgrade to anOLED TV.
When watching in a dark room, this can really detract from the picture.
That’s a non-issue on an OLED.
If you watch movies by yourself, consider watching them on an ultrawide PC monitor.
I also quite like watching cinematic films using one of myVR headsets.
Perhaps the best solution currently for watching cinematic content with an anamorphic aspect ratio is to use aprojector.