But the wall is not designed to be a TV but for digital signage. Even that page is inside their business side. I'm not sure while they keep trying to market to consumers. With those prices clearly it doesn't even make sense.

IIRC Sony has Crystal led (which is just a brand for their micro led), and other companies have a sub 1mm pitch led walls which should be pretty similar.

For a more "classical" solution there are LCD's with hairline bezels like Barco Unisee's, but again even those are far from consumer prices.