Just buy "digital signage"

Which works, but is priced very high - and not just for the fact that the seller can't monetize ads. Digital signage displays are designed for much higher duty cycles than a home TV, for display in areas where ambient brightness is much higher on average. You're paying for the tech that you want, but you're also paying for a lot of tech that you don't want or need.

Right, but what everyone is whingeing about is for it to be available even at a higher price point.

Digital signage shows the market is already solving this problem so if all this complaining is to mean anything people are talking about yet another new market that fits in between the smart TV price and the digital signage price