The parent post saying they “cost a bit higher” is, AFAICT, understating it a wee bit. LG’s consumer 65-inch 4K OLED TVs run between $1200 and $2500 at retail, from a quick search; the 65-inch 4K OLED “professional monitor” linked on that page—e.g., the one that’s closest to an actual TV—retails for around $8000 at B&H. The cheapest OLED commercial TV I could find at b&H was a 55” LG for $3K…and as far as I can tell it’s really just a Smart TV, complete with all internet connectivity, for twice the price because it has the word “commercial” in its name.
