"Commercial displays" are the answer. A TV without a tuner or any of the bullshit. Just HDMI.
In a past theme park life we setup our outdoor TVs for showing queue line content and they used NEC P430(? It's been years) both outside in a case and inside for digital menu boards in restaurants.
I ended up just blocking LG's servers on my network.
As you see in retail and airport settings, these displays are bought by the thousand and are often configured in 6/9/18 screen "display walls" ... and therefore the purchasers are price-sensitive.
Yes, they are more expensive than a TV from Best Buy, but only about 2x - not 5x.