I would love if there was an open 4K HDR TV but I think only a very niche audience actually cares about this so most manufacturers will not see a market opportunity
Search for "signage displays", some have TV functionality built in and some have no, or more tweakable, smart functions. Cost is a lot higher than consumer sets as is quality: they're built to guarantee 18/24 or even 24/24 operation and are the same screens one sees around at malls, streets, stations, airports, etc that would be simply too costly if they broke as often as consumer devices do.
I see your point. Real question: In today's world, what is the difference between a TV and a computer monitor + RasPi? I guess the biggest issue will be streaming on services with very strict operating system / browser requirements.
For example, can you stream Netflix @ 4K via RasPi? I assume no, due to super strict DRM.
It is a little bit surprising to me that the big streaming companies have not creating an open source operating system (similar to Android) that can be used by manuf to create TVs. Then, smaller manuf can find ways to offer bloatware- / adware-free options. Maybe this already exists, and this comment makes no sense!
Size, OLED, HDR, and eARC are three things I can't find in a monitor. I don't know of any 55" OLED monitors that support Dolby Vision and can output their audio to my home audio system over eARC. OLED and Dolby Vision are important to me because HDR makes such a huge difference in properly mastered content. eARC is important because my audio system is able to take advantage of Dolby Atmos metadata and I don't want to lose that. I could just pass my HDMI inputs through my receiver, but my receiver doesn't support passing through 4k 120Hz which I appreciate using with my Xbox.
HDR and OLED are available in some monitor models, but to my knowledge there aren't any 55" monitors with HDR and OLED, and especially eARC.
As someone who recently invested in their first AV receiver, surround sound setup, then navigating hacked drivers to get Dolby Atmos, DTS etc working properly on Windows, finding I can't use my Hue strips in Netflix etc because of DRM, realising Plex cannot serve HDR content, having to edit EDID data so my PC would allow 4k/120fps + VRR with my fiber optic cables... I realise that we're living in an unnecessarily complex DRM hell.
