Some of you may have noticed that Samsung have unveiled a Vertical Tv ,primarily aimed at millennials, ideally for wstching Instagram. Snapchat and Smart phone Videos. It is a 43 inch Smart Tv called the Sero which can be flipped 90° for this display, Initially only available in South korea at present time for equivalent of $1600,€1423 or £1223 (approx). Noticed that one national "newspaper" (The Sun) reported it as being around £12000 but they are a bit out!
Though would there be a genuine market for this or a niche or even gimicky product. No doubt some would be enticed but smart Phones likely have more appeal for some of the features.
Microsoft have the Surface Hub 2 a 50.5 inch screen which can also be flipped with Touhscreen and benefits for collaberative working rather than being aimed at entertainment.