Or a trade show booth.Definitely not a laptop. I can certainly see this as popular for some business or scientific uses. Where the user needs a luggable workstation.
I’m picturing the likes of a field researcher. At a base camp. Where this would decrease the amount of equipment to carry and speed up setup.
Really anywhere a lot of screen real estate is needed. Making a laptop impractical. But a permanent desktop installation as impractical. Requiring lugging multiple items.